diff --git a/include/functions.h b/include/functions.h
index 406bdc410..9e9c85838 100644
--- a/include/functions.h
+++ b/include/functions.h
@@ -1837,7 +1837,7 @@ void Inventory_UpdateItem(PlayState* play, s16 slot, s16 item);
 void Interface_SetAButtonDoAction(PlayState* play, u16 aButtonDoAction);
 void Interface_SetBButtonDoAction(PlayState* play, s16 bButtonDoAction);
 void Interface_SetTatlCall(PlayState* play, u16 tatlCallState);
-void func_80115844(PlayState* play, s16 arg1);
+void Interface_LoadBButtonDoActionLabel(PlayState* play, s16 bButtonDoAction);
 s32 Health_ChangeBy(PlayState* play, s16 healthChange);
 void Health_GiveHearts(s16 hearts);
 void Rupees_ChangeBy(s16 rupeeChange);
diff --git a/include/regs.h b/include/regs.h
index 592d2089a..097ece8ce 100644
--- a/include/regs.h
+++ b/include/regs.h
@@ -43,8 +43,9 @@
 #define bREG(r) BASE_REG(28, r)
 
 /* TODO: Actually confirm these, in case of miss-match it's at least a simple list to `sed` */
-#define R_ENABLE_ARENA_DBG                SREG(0) // Same as OoT
+#define R_TIME_SPEED                      REG(15)
 #define R_RUN_SPEED_LIMIT                 REG(45)
+#define R_ENABLE_ARENA_DBG                SREG(0) // Same as OoT
 #define R_UPDATE_RATE                     SREG(30)
 #define R_PAUSE_MENU_MODE                 SREG(94)
 #define R_C_UP_ICON_X                     YREG(88)
@@ -65,11 +66,13 @@
 #define R_ITEM_ICON_X(i)                  ZREG(82 + i)
 #define R_ITEM_ICON_Y(i)                  ZREG(86 + i)
 #define R_ITEM_ICON_DD(i)                 ZREG(90 + i)
+#define R_MAGIC_DBG_SET_UPGRADE           XREG(4)
 #define R_A_BTN_Y                         XREG(16)
 #define R_A_BTN_X                         XREG(17)
 #define R_A_ICON_Y                        XREG(19)
 #define R_A_ICON_X                        XREG(20)
 #define R_A_BTN_COLOR(i)                  XREG(22 + i)
+#define R_A_BTN_Y_OFFSET                  XREG(31)
 #define R_MAGIC_CONSUME_TIMER_GIANTS_MASK XREG(41)
 #define R_MOON_CRASH_TIMER_Y              XREG(80)
 #define R_MOON_CRASH_TIMER_X              XREG(81)
diff --git a/include/variables.h b/include/variables.h
index 70508d72b..c723e92c0 100644
--- a/include/variables.h
+++ b/include/variables.h
@@ -1099,11 +1099,11 @@ extern UNK_PTR D_801BF5C0;
 // extern UNK_TYPE1 D_801BFB14;
 // extern UNK_TYPE1 D_801BFB1C;
 // extern UNK_TYPE1 D_801BFB24;
-// extern UNK_TYPE2 D_801BFB2C;
+// extern UNK_TYPE2 sThreeDayClockAlpha;
 // extern UNK_TYPE2 D_801BFB30;
 // extern UNK_TYPE2 D_801BFB34;
-// extern UNK_TYPE1 D_801BFB38;
-// extern UNK_TYPE1 D_801BFB6C;
+// extern UNK_TYPE1 sThreeDayClockHours;
+// extern UNK_TYPE1 sThreeDayClockHourTextures;
 // extern UNK_TYPE2 D_801BFBCC;
 // extern UNK_TYPE2 D_801BFBD0;
 // extern UNK_TYPE2 D_801BFBD4;
@@ -1122,7 +1122,7 @@ extern UNK_PTR D_801BF5C0;
 // extern UNK_TYPE1 D_801BFC08;
 // extern UNK_TYPE1 D_801BFC0C;
 // extern UNK_TYPE1 D_801BFC10;
-// extern UNK_TYPE1 D_801BFC14;
+// extern UNK_TYPE1 sFinalHoursDigitTextures;
 // extern UNK_TYPE1 D_801BFC40;
 // extern UNK_TYPE2 D_801BFC50;
 // extern UNK_TYPE2 sMinigamePerfectType1PrimColorTargets;
@@ -1155,8 +1155,8 @@ extern UNK_PTR D_801BF5C0;
 // extern UNK_TYPE2 sMinigameCountdownPrimColors;
 // extern UNK_TYPE1 gStoryTextures;
 // extern UNK_TYPE1 gStoryTLUTs;
-// extern UNK_TYPE1 D_801BFD94;
-// extern UNK_TYPE2 D_801BFD98;
+// extern UNK_TYPE1 sIsSunsPlayedAtDay;
+// extern UNK_TYPE2 sPrevTimeSpeed;
 
 // extern UNK_TYPE1 D_801BFDD0;
 // extern UNK_TYPE1 D_801BFE00;
diff --git a/include/z64.h b/include/z64.h
index 61323e9ae..a34e0b3ab 100644
--- a/include/z64.h
+++ b/include/z64.h
@@ -495,7 +495,7 @@ typedef enum {
 
 typedef struct {
     /* 0x00 */ u16 unk_0;
-    /* 0x02 */ u16 timeIncrement;
+    /* 0x02 */ u16 sceneTimeSpeed; // time speed value from the scene file
     /* 0x04 */ f32 unk_4;
     /* 0x08 */ f32 unk_8;
     /* 0x0C */ f32 unk_C;
diff --git a/include/z64interface.h b/include/z64interface.h
index 28ba7d4a5..3c3396ed1 100644
--- a/include/z64interface.h
+++ b/include/z64interface.h
@@ -4,6 +4,14 @@
 #include "ultra64.h"
 #include "z64view.h"
 
+typedef enum {
+    /* 0 */ A_BTN_STATE_0,
+    /* 1 */ A_BTN_STATE_1,
+    /* 2 */ A_BTN_STATE_2,
+    /* 3 */ A_BTN_STATE_3,
+    /* 4 */ A_BTN_STATE_4
+} AButtonState;
+
 typedef enum {
     /* 0x00 */ DO_ACTION_ATTACK,
     /* 0x01 */ DO_ACTION_CHECK,
@@ -118,10 +126,10 @@ typedef struct {
     /* 0x1E4 */ OSMesgQueue loadQueue;
     /* 0x1FC */ OSMesg loadMsg;
     /* 0x200 */ Viewport viewport;
-    /* 0x210 */ s16 unk_210;
-    /* 0x212 */ u16 unk_212;
-    /* 0x214 */ u16 unk_214;
-    /* 0x218 */ f32 unk_218;
+    /* 0x210 */ s16 aButtonState;
+    /* 0x212 */ u16 aButtonHorseDoAction; // TODO: Confirm. Only seems to be used for Epona and "DO_ACTION_FASTER"
+    /* 0x214 */ u16 aButtonDoAction;
+    /* 0x218 */ f32 aButtonRoll;
     /* 0x21C */ s16 bButtonDoActionActive;
     /* 0x21E */ s16 bButtonDoAction;
     /* 0x220 */ s16 tatlCalling;
@@ -138,7 +146,7 @@ typedef struct {
     /* 0x246 */ s16 heartsEnvG[2];
     /* 0x24A */ s16 heartsEnvB[2];
     /* 0x24E */ s16 health;
-    /* 0x250 */ s16 unkTimer;
+    /* 0x250 */ s16 healthTimer;
     /* 0x252 */ s16 lifeSizeChange;
     /* 0x254 */ s16 lifeSizeChangeDirection; // 1 means shrinking, 0 growing
     /* 0x256 */ s16 unk_256;
diff --git a/include/z64save.h b/include/z64save.h
index c73a5cb94..2fb7831cd 100644
--- a/include/z64save.h
+++ b/include/z64save.h
@@ -56,6 +56,11 @@ typedef enum {
 #define MAGIC_NORMAL_METER 0x30
 #define MAGIC_DOUBLE_METER (2 * MAGIC_NORMAL_METER)
 
+// See `R_MAGIC_DBG_SET_UPGRADE`
+#define MAGIC_DBG_SET_UPGRADE_NO_ACTION 0
+#define MAGIC_DBG_SET_UPGRADE_NORMAL_METER -1
+#define MAGIC_DBG_SET_UPGRADE_DOUBLE_METER 1
+
 #define SECONDS_TO_TIMER(seconds) ((seconds) * 100)
 
 #define OSTIME_TO_TIMER(osTime) ((osTime) * 64 / 3000 / 10000)
diff --git a/include/z64scene.h b/include/z64scene.h
index 9658c4f4d..7550d69e2 100644
--- a/include/z64scene.h
+++ b/include/z64scene.h
@@ -119,7 +119,7 @@ typedef struct {
     /* 0x2 */ UNK_TYPE1 pad2[2];
     /* 0x4 */ u8  hour;
     /* 0x5 */ u8  min;
-    /* 0x6 */ u8  unk6;
+    /* 0x6 */ u8  timeSpeed;
 } SCmdTimeSettings; // size = 0x7
 
 typedef struct {
diff --git a/src/code/z_demo.c b/src/code/z_demo.c
index 79d6d05ff..e1df23c77 100644
--- a/src/code/z_demo.c
+++ b/src/code/z_demo.c
@@ -251,9 +251,9 @@ void Cutscene_Command_Misc(PlayState* play, CutsceneContext* csCtx, CsCmdBase* c
             break;
         case 0x12:
             if (!gSaveContext.save.isNight) {
-                gSaveContext.save.time = ((void)0, gSaveContext.save.time) - (u16)REG(15);
+                gSaveContext.save.time = ((void)0, gSaveContext.save.time) - (u16)R_TIME_SPEED;
             } else {
-                gSaveContext.save.time = ((void)0, gSaveContext.save.time) - (u16)(2 * REG(15));
+                gSaveContext.save.time = ((void)0, gSaveContext.save.time) - (u16)(2 * R_TIME_SPEED);
             }
             break;
         case 0x13:
@@ -325,8 +325,8 @@ void Cutscene_Command_Misc(PlayState* play, CutsceneContext* csCtx, CsCmdBase* c
             if (csCtx->frames != D_801BB15C) {
                 D_801BB15C = csCtx->frames;
 
-                if (REG(15) != 0) {
-                    gSaveContext.save.time = ((void)0, gSaveContext.save.time) + (u16)REG(15);
+                if (R_TIME_SPEED != 0) {
+                    gSaveContext.save.time = ((void)0, gSaveContext.save.time) + (u16)R_TIME_SPEED;
                     gSaveContext.save.time =
                         ((void)0, gSaveContext.save.time) + (u16)((void)0, gSaveContext.save.daySpeed);
                 }
diff --git a/src/code/z_lifemeter.c b/src/code/z_lifemeter.c
index d2a3a254c..a6989f23e 100644
--- a/src/code/z_lifemeter.c
+++ b/src/code/z_lifemeter.c
@@ -36,7 +36,7 @@ TexturePtr HeartDDTextures[] = {
 void LifeMeter_Init(PlayState* play) {
     InterfaceContext* interfaceCtx = &play->interfaceCtx;
 
-    interfaceCtx->unkTimer = 320;
+    interfaceCtx->healthTimer = 320;
 
     interfaceCtx->health = gSaveContext.save.playerData.health;
 
@@ -167,39 +167,44 @@ void LifeMeter_UpdateColors(PlayState* play) {
     sBeatingHeartsDDEnv[2] = (u8)(bFactor + 0) & 0xFF;
 }
 
+// Unused
 s32 LifeMeter_SaveInterfaceHealth(PlayState* play) {
-    gSaveContext.save.playerData.health = play->interfaceCtx.health;
+    InterfaceContext* interfaceCtx = &play->interfaceCtx;
+
+    gSaveContext.save.playerData.health = interfaceCtx->health;
 
     return 1;
 }
 
+// Unused
 s32 LifeMeter_IncreaseInterfaceHealth(PlayState* play) {
     InterfaceContext* interfaceCtx = &play->interfaceCtx;
 
-    interfaceCtx->unkTimer = 320;
+    interfaceCtx->healthTimer = 320;
     interfaceCtx->health += 0x10;
     if (play->interfaceCtx.health >= gSaveContext.save.playerData.health) {
         play->interfaceCtx.health = gSaveContext.save.playerData.health;
-        return 1;
+        return true;
     }
-    return 0;
+    return false;
 }
 
+// Unused
 s32 LifeMeter_DecreaseInterfaceHealth(PlayState* play) {
     InterfaceContext* interfaceCtx = &play->interfaceCtx;
 
-    if (interfaceCtx->unkTimer != 0) {
-        interfaceCtx->unkTimer--;
+    if (interfaceCtx->healthTimer != 0) {
+        interfaceCtx->healthTimer--;
     } else {
-        interfaceCtx->unkTimer = 320;
+        interfaceCtx->healthTimer = 320;
         interfaceCtx->health -= 0x10;
         if (interfaceCtx->health <= 0) {
             interfaceCtx->health = 0;
             play->damagePlayer(play, -(((void)0, gSaveContext.save.playerData.health) + 1));
-            return 1;
+            return true;
         }
     }
-    return 0;
+    return false;
 }
 
 void LifeMeter_Draw(PlayState* play) {
diff --git a/src/code/z_parameter.c b/src/code/z_parameter.c
index 5bcd47e15..322e1882e 100644
--- a/src/code/z_parameter.c
+++ b/src/code/z_parameter.c
@@ -239,8 +239,7 @@ s16 D_801BF9D4[] = { 0xA7, 0xE3 };
 s16 D_801BF9D8[] = { 0xF9, 0x10F };
 s16 D_801BF9DC[] = { 0x11, 0x12 };
 s16 D_801BF9E0[] = { 0x22, 0x12 };
-s16 D_801BF9E4[] = { 0x23F, 0x26C };
-s16 D_801BF9E8[] = { 0x26C, 0x26C };
+s16 D_801BF9E4[] = { 0x23F, 0x26C, 0x26C, 0x26C };
 
 s16 sFinalHoursClockDigitsRed = 0;
 s16 sFinalHoursClockFrameEnvRed = 0;
@@ -459,7 +458,7 @@ s16 sMinigamePerfectVtxPosY[] = {
 
 /**
  * interfaceCtx->actionVtx[0]   -> A Button
- * interfaceCtx->actionVtx[4]   -> A Button Background
+ * interfaceCtx->actionVtx[4]   -> A Button Shadow
  * interfaceCtx->actionVtx[8]   -> A Button Do-Action
  * interfaceCtx->actionVtx[12]  -> Three-Day Clock's Star (for the Minute Tracker)
  * interfaceCtx->actionVtx[16]  -> Three-Day Clock's Sun (for the Day-Time Hours Tracker)
@@ -1589,6 +1588,7 @@ void Interface_UpdateHudAlphas(PlayState* play, s16 dimmingAlpha) {
 
 /**
  * A continuation of the if-else chain from Interface_UpdateButtonsPart1
+ * Also used directly when opening the pause menu i.e. skips part 1
  */
 void Interface_UpdateButtonsPart2(PlayState* play) {
     MessageContext* msgCtx = &play->msgCtx;
@@ -2228,14 +2228,12 @@ void Interface_UpdateButtonsPart1(PlayState* play) {
                 if (!(play->actorCtx.flags & ACTORCTX_FLAG_PICTOGRAPH_ON)) {
                     func_801663C4((play->unk_18E5C != NULL) ? play->unk_18E5C : D_801FBB90,
                                   (u8*)((void)0, gSaveContext.pictoPhoto), 0x4600);
-                    interfaceCtx->unk_224 = 0;
-                    interfaceCtx->unk_222 = interfaceCtx->unk_224;
+                    interfaceCtx->unk_222 = interfaceCtx->unk_224 = 0;
                     restoreHudVisibility = true;
                     sPictographState = PICTOGRAPH_STATE_OFF;
                 } else if (CHECK_BTN_ALL(CONTROLLER1(&play->state)->press.button, BTN_B)) {
                     play->actorCtx.flags &= ~ACTORCTX_FLAG_PICTOGRAPH_ON;
-                    interfaceCtx->unk_224 = 0;
-                    interfaceCtx->unk_222 = interfaceCtx->unk_224;
+                    interfaceCtx->unk_222 = interfaceCtx->unk_224 = 0;
                     restoreHudVisibility = true;
                     sPictographState = PICTOGRAPH_STATE_OFF;
                 } else if (CHECK_BTN_ALL(CONTROLLER1(&play->state)->press.button, BTN_A) || (func_801A5100() == 1)) {
@@ -2255,7 +2253,7 @@ void Interface_UpdateButtonsPart1(PlayState* play) {
                 func_801477B4(play);
                 if (play->msgCtx.choiceIndex != 0) {
                     func_8019F230();
-                    func_80115844(play, 0x12);
+                    Interface_LoadBButtonDoActionLabel(play, DO_ACTION_STOP);
                     Interface_SetHudVisibility(HUD_VISIBILITY_A_B);
                     sPictographState = PICTOGRAPH_STATE_LENS;
                     REMOVE_QUEST_ITEM(QUEST_PICTOGRAPH);
@@ -2293,7 +2291,7 @@ void Interface_UpdateButtonsPart1(PlayState* play) {
         } else if (play->actorCtx.flags & ACTORCTX_FLAG_PICTOGRAPH_ON) {
             // Related to pictograph
             if (!CHECK_QUEST_ITEM(QUEST_PICTOGRAPH)) {
-                func_80115844(play, 0x12);
+                Interface_LoadBButtonDoActionLabel(play, DO_ACTION_STOP);
                 Interface_SetHudVisibility(HUD_VISIBILITY_A_B);
                 sPictographState = PICTOGRAPH_STATE_LENS;
             } else {
@@ -3140,15 +3138,15 @@ void Inventory_UpdateItem(PlayState* play, s16 slot, s16 item) {
     }
 }
 
-void func_801153C8(s32* buf, s32 size) {
+void Interface_MemSetZeroed(u32* buf, s32 count) {
     s32 i;
 
-    for (i = 0; i != size; i++) {
+    for (i = 0; i != count; i++) {
         buf[i] = 0;
     }
 }
 
-void Interface_LoadActionLabel(InterfaceContext* interfaceCtx, u16 action, s16 loadOffset) {
+void Interface_LoadAButtonDoActionLabel(InterfaceContext* interfaceCtx, u16 action, s16 loadOffset) {
     static TexturePtr sDoActionTextures[] = {
         gDoActionAttackENGTex,
         gDoActionCheckENGTex,
@@ -3165,24 +3163,23 @@ void Interface_LoadActionLabel(InterfaceContext* interfaceCtx, u16 action, s16 l
                                (u32)SEGMENT_ROM_START(do_action_static) + (action * DO_ACTION_TEX_SIZE),
                                DO_ACTION_TEX_SIZE, 0, &interfaceCtx->loadQueue, 0);
         osRecvMesg(&interfaceCtx->loadQueue, NULL, OS_MESG_BLOCK);
-        return;
+    } else {
+        gSegments[0x09] = PHYSICAL_TO_VIRTUAL(interfaceCtx->doActionSegment);
+        Interface_MemSetZeroed(Lib_SegmentedToVirtual(sDoActionTextures[loadOffset]), 0x60);
     }
-
-    gSegments[0x09] = PHYSICAL_TO_VIRTUAL(interfaceCtx->doActionSegment);
-    func_801153C8(Lib_SegmentedToVirtual(sDoActionTextures[loadOffset]), 0x60);
 }
 
 void Interface_SetAButtonDoAction(PlayState* play, u16 aButtonDoAction) {
     InterfaceContext* interfaceCtx = &play->interfaceCtx;
     PauseContext* pauseCtx = &play->pauseCtx;
 
-    if (interfaceCtx->unk_214 != aButtonDoAction) {
-        interfaceCtx->unk_214 = aButtonDoAction;
-        interfaceCtx->unk_210 = 1;
-        interfaceCtx->unk_218 = 0.0f;
-        Interface_LoadActionLabel(interfaceCtx, aButtonDoAction, 1);
+    if (interfaceCtx->aButtonDoAction != aButtonDoAction) {
+        interfaceCtx->aButtonDoAction = aButtonDoAction;
+        interfaceCtx->aButtonState = A_BTN_STATE_1;
+        interfaceCtx->aButtonRoll = 0.0f;
+        Interface_LoadAButtonDoActionLabel(interfaceCtx, aButtonDoAction, 1);
         if (pauseCtx->state != 0) {
-            interfaceCtx->unk_210 = 3;
+            interfaceCtx->aButtonState = A_BTN_STATE_3;
         }
     }
 }
@@ -3235,16 +3232,15 @@ void Interface_SetTatlCall(PlayState* play, u16 tatlCallState) {
     }
 }
 
-// Interface_LoadActionLabelB?
-void func_80115844(PlayState* play, s16 arg1) {
+void Interface_LoadBButtonDoActionLabel(PlayState* play, s16 bButtonDoAction) {
     InterfaceContext* interfaceCtx = &play->interfaceCtx;
 
-    interfaceCtx->unk_224 = arg1;
+    interfaceCtx->unk_224 = bButtonDoAction;
 
     osCreateMesgQueue(&play->interfaceCtx.loadQueue, &play->interfaceCtx.loadMsg, 1);
     DmaMgr_SendRequestImpl(&interfaceCtx->dmaRequest_184, interfaceCtx->doActionSegment + 0x480,
-                           (arg1 * 0x180) + SEGMENT_ROM_START(do_action_static), 0x180, 0, &interfaceCtx->loadQueue,
-                           NULL);
+                           (bButtonDoAction * 0x180) + SEGMENT_ROM_START(do_action_static), 0x180, 0,
+                           &interfaceCtx->loadQueue, NULL);
     osRecvMesg(&interfaceCtx->loadQueue, NULL, OS_MESG_BLOCK);
 
     interfaceCtx->unk_222 = 1;
@@ -3813,7 +3809,7 @@ void Magic_DrawMeter(PlayState* play) {
     CLOSE_DISPS(play->state.gfxCtx);
 }
 
-void Interface_SetView1(PlayState* play, s32 topY, s32 bottomY, s32 leftX, s32 rightX) {
+void Interface_SetPerspectiveView(PlayState* play, s32 topY, s32 bottomY, s32 leftX, s32 rightX) {
     InterfaceContext* interfaceCtx = &play->interfaceCtx;
     Vec3f eye;
     Vec3f lookAt;
@@ -3837,7 +3833,7 @@ void Interface_SetView1(PlayState* play, s32 topY, s32 bottomY, s32 leftX, s32 r
     View_ApplyPerspectiveToOverlay(&interfaceCtx->view);
 }
 
-void Interface_SetView2(InterfaceContext* interfaceCtx) {
+void Interface_SetOrthoView(InterfaceContext* interfaceCtx) {
     SET_FULLSCREEN_VIEWPORT(&interfaceCtx->view);
     View_ApplyOrthoToOverlay(&interfaceCtx->view);
 }
@@ -3867,22 +3863,20 @@ void Interface_DrawItemButtons(PlayState* play) {
     // B Button Color & Texture
     OVERLAY_DISP = Gfx_DrawTexRectIA8_DropShadow(OVERLAY_DISP, gButtonBackgroundTex, 0x20, 0x20, D_801BF9D4[0],
                                                  D_801BF9DC[0], D_801BFAF4[0], D_801BFAF4[0], D_801BF9E4[0] * 2,
-                                                 D_801BF9E4[0] * 2, 0x64, 0xFF, 0x78, interfaceCtx->bAlpha);
+                                                 D_801BF9E4[0] * 2, 100, 255, 120, interfaceCtx->bAlpha);
     if (1) {}
     gDPPipeSync(OVERLAY_DISP++);
 
     // C-Left Button Color & Texture
-    OVERLAY_DISP =
-        Gfx_DrawRect_DropShadow(OVERLAY_DISP, D_801BF9D4[1], D_801BF9DC[1], D_801BFAF4[1], D_801BFAF4[1],
-                                D_801BF9E4[1] * 2, D_801BF9E4[1] * 2, 0xFF, 0xF0, 0, interfaceCtx->cLeftAlpha);
+    OVERLAY_DISP = Gfx_DrawRect_DropShadow(OVERLAY_DISP, D_801BF9D4[1], D_801BF9DC[1], D_801BFAF4[1], D_801BFAF4[1],
+                                           D_801BF9E4[1] * 2, D_801BF9E4[1] * 2, 255, 240, 0, interfaceCtx->cLeftAlpha);
     // C-Down Button Color & Texture
-    OVERLAY_DISP =
-        Gfx_DrawRect_DropShadow(OVERLAY_DISP, D_801BF9D8[0], D_801BF9E0[0], D_801BFAF8[0], D_801BFAF8[0],
-                                D_801BF9E8[0] * 2, D_801BF9E8[0] * 2, 0xFF, 0xF0, 0, interfaceCtx->cDownAlpha);
+    OVERLAY_DISP = Gfx_DrawRect_DropShadow(OVERLAY_DISP, D_801BF9D8[0], D_801BF9E0[0], D_801BFAF8[0], D_801BFAF8[0],
+                                           D_801BF9E4[2] * 2, D_801BF9E4[2] * 2, 255, 240, 0, interfaceCtx->cDownAlpha);
     // C-Right Button Color & Texture
     OVERLAY_DISP =
         Gfx_DrawRect_DropShadow(OVERLAY_DISP, D_801BF9D8[1], D_801BF9E0[1], D_801BFAF8[1], D_801BFAF8[1],
-                                D_801BF9E8[1] * 2, D_801BF9E8[1] * 2, 0xFF, 0xF0, 0, interfaceCtx->cRightAlpha);
+                                D_801BF9E4[3] * 2, D_801BF9E4[3] * 2, 255, 240, 0, interfaceCtx->cRightAlpha);
 
     if ((pauseCtx->state < 8) || (pauseCtx->state >= 19)) {
         if ((play->pauseCtx.state != 0) || (play->pauseCtx.debugEditor != DEBUG_EDITOR_NONE)) {
@@ -4043,7 +4037,7 @@ void Interface_DrawAmmoCount(PlayState* play, s16 button, s16 alpha) {
     CLOSE_DISPS(play->state.gfxCtx);
 }
 
-void func_80118084(PlayState* play) {
+void Interface_DrawBButtonIcons(PlayState* play) {
     InterfaceContext* interfaceCtx = &play->interfaceCtx;
     Player* player = GET_PLAYER(play);
 
@@ -4124,7 +4118,10 @@ void func_80118084(PlayState* play) {
     CLOSE_DISPS(play->state.gfxCtx);
 }
 
-void func_80118890(PlayState* play) {
+/**
+ * Draws the icons and ammo for each of the C buttons
+ */
+void Interface_DrawCButtonIcons(PlayState* play) {
     InterfaceContext* interfaceCtx = &play->interfaceCtx;
 
     OPEN_DISPS(play->state.gfxCtx);
@@ -4171,7 +4168,7 @@ void func_80118890(PlayState* play) {
     CLOSE_DISPS(play->state.gfxCtx);
 }
 
-void func_80118BA4(PlayState* play) {
+void Interface_DrawAButton(PlayState* play) {
     InterfaceContext* interfaceCtx = &play->interfaceCtx;
     s16 aAlpha;
 
@@ -4185,7 +4182,7 @@ void func_80118BA4(PlayState* play) {
 
     func_8012C8D4(play->state.gfxCtx);
 
-    Interface_SetView1(play, XREG(31) + 0x19, XREG(31) + 0x46, 192, 237);
+    Interface_SetPerspectiveView(play, 25 + R_A_BTN_Y_OFFSET, 70 + R_A_BTN_Y_OFFSET, 192, 237);
 
     gSPClearGeometryMode(OVERLAY_DISP++, G_CULL_BOTH);
     gDPSetCombineMode(OVERLAY_DISP++, G_CC_MODULATEIA_PRIM, G_CC_MODULATEIA_PRIM);
@@ -4193,8 +4190,9 @@ void func_80118BA4(PlayState* play) {
 
     Matrix_Translate(0.0f, 0.0f, -38.0f, MTXMODE_NEW);
     Matrix_Scale(1.0f, 1.0f, 1.0f, MTXMODE_APPLY);
-    Matrix_RotateXFApply(interfaceCtx->unk_218 / 10000.0f);
+    Matrix_RotateXFApply(interfaceCtx->aButtonRoll / 10000.0f);
 
+    // Draw A button Shadow
     gSPMatrix(OVERLAY_DISP++, Matrix_NewMtx(play->state.gfxCtx), G_MTX_NOPUSH | G_MTX_LOAD | G_MTX_MODELVIEW);
     gDPPipeSync(OVERLAY_DISP++);
     gSPVertex(OVERLAY_DISP++, &interfaceCtx->actionVtx[4], 4, 0);
@@ -4202,14 +4200,16 @@ void func_80118BA4(PlayState* play) {
 
     OVERLAY_DISP = Gfx_DrawTexQuadIA8(OVERLAY_DISP, gButtonBackgroundTex, 32, 32, 0);
 
+    // Draw A Button Colored
     gDPPipeSync(OVERLAY_DISP++);
-    Interface_SetView1(play, XREG(31) + 0x17, XREG(31) + 0x44, 190, 235);
+    Interface_SetPerspectiveView(play, 23 + R_A_BTN_Y_OFFSET, 68 + R_A_BTN_Y_OFFSET, 190, 235);
     gSPVertex(OVERLAY_DISP++, &interfaceCtx->actionVtx[0], 4, 0);
     gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 100, 200, 255, interfaceCtx->aAlpha);
     gSP1Quadrangle(OVERLAY_DISP++, 0, 2, 3, 1, 0);
 
+    // Draw A Button Do-Action
     gDPPipeSync(OVERLAY_DISP++);
-    Interface_SetView1(play, XREG(31) + 0x17, XREG(31) + 0x44, 190, 235);
+    Interface_SetPerspectiveView(play, 23 + R_A_BTN_Y_OFFSET, 68 + R_A_BTN_Y_OFFSET, 190, 235);
     gSPSetGeometryMode(OVERLAY_DISP++, G_CULL_BACK);
     gDPSetCombineLERP(OVERLAY_DISP++, PRIMITIVE, ENVIRONMENT, TEXEL0, ENVIRONMENT, TEXEL0, 0, PRIMITIVE, 0, PRIMITIVE,
                       ENVIRONMENT, TEXEL0, ENVIRONMENT, TEXEL0, 0, PRIMITIVE, 0);
@@ -4218,12 +4218,12 @@ void func_80118BA4(PlayState* play) {
 
     Matrix_Translate(0.0f, 0.0f, D_801BF9CC[gSaveContext.options.language] / 10.0f, MTXMODE_NEW);
     Matrix_Scale(1.0f, 1.0f, 1.0f, MTXMODE_APPLY);
-    Matrix_RotateXFApply(interfaceCtx->unk_218 / 10000.0f);
+    Matrix_RotateXFApply(interfaceCtx->aButtonRoll / 10000.0f);
     gSPMatrix(OVERLAY_DISP++, Matrix_NewMtx(play->state.gfxCtx), G_MTX_NOPUSH | G_MTX_LOAD | G_MTX_MODELVIEW);
     gSPVertex(OVERLAY_DISP++, &interfaceCtx->actionVtx[8], 4, 0);
 
     // Draw Action Label
-    if (((interfaceCtx->unk_210 < 2) || (interfaceCtx->unk_210 == 3))) {
+    if (((interfaceCtx->aButtonState <= A_BTN_STATE_1) || (interfaceCtx->aButtonState == A_BTN_STATE_3))) {
         OVERLAY_DISP = Gfx_DrawTexQuad4b(OVERLAY_DISP, interfaceCtx->doActionSegment, 3, DO_ACTION_TEX_WIDTH,
                                          DO_ACTION_TEX_HEIGHT, 0);
     } else {
@@ -4239,7 +4239,7 @@ s16 D_801BFB14[] = { 255, 100, 255, 0 }; // magicArrowEffectsR
 s16 D_801BFB1C[] = { 0, 100, 255, 0 };   // magicArrowEffectsG
 s16 D_801BFB24[] = { 0, 255, 100, 0 };   // magicArrowEffectsB
 
-void func_80119030(PlayState* play) {
+void Interface_DrawPauseMenuEquippingIcons(PlayState* play) {
     InterfaceContext* interfaceCtx = &play->interfaceCtx;
     PauseContext* pauseCtx = &play->pauseCtx;
     s16 temp;
@@ -4248,7 +4248,7 @@ void func_80119030(PlayState* play) {
 
     gDPPipeSync(OVERLAY_DISP++);
 
-    Interface_SetView2(interfaceCtx);
+    Interface_SetOrthoView(interfaceCtx);
 
     if (pauseCtx->state == 6) {
         if ((pauseCtx->unk_200 == 3) || (pauseCtx->unk_200 == 0xF)) {
@@ -4309,19 +4309,17 @@ void func_80119030(PlayState* play) {
  */
 #ifdef NON_MATCHING
 void Interface_DrawClock(PlayState* play) {
-    static s16 D_801BFB2C = 255; // clockAlpha
-    static s16 D_801BFB30 = 0;   // clockAlphaTimer1
-    static s16 D_801BFB34 = 0;   // clockAlphaTimer2
-    // clockHours
-    static u16 D_801BFB38[] = {
+    static s16 sThreeDayClockAlpha = 255;
+    static s16 D_801BFB30 = 0; // clockAlphaTimer1
+    static s16 D_801BFB34 = 0; // clockAlphaTimer2
+    static u16 sThreeDayClockHours[] = {
         CLOCK_TIME(0, 0),  CLOCK_TIME(1, 0),  CLOCK_TIME(2, 0),  CLOCK_TIME(3, 0),  CLOCK_TIME(4, 0),
         CLOCK_TIME(5, 0),  CLOCK_TIME(6, 0),  CLOCK_TIME(7, 0),  CLOCK_TIME(8, 0),  CLOCK_TIME(9, 0),
         CLOCK_TIME(10, 0), CLOCK_TIME(11, 0), CLOCK_TIME(12, 0), CLOCK_TIME(13, 0), CLOCK_TIME(14, 0),
         CLOCK_TIME(15, 0), CLOCK_TIME(16, 0), CLOCK_TIME(17, 0), CLOCK_TIME(18, 0), CLOCK_TIME(19, 0),
         CLOCK_TIME(20, 0), CLOCK_TIME(21, 0), CLOCK_TIME(22, 0), CLOCK_TIME(23, 0), CLOCK_TIME(24, 0) - 1,
     };
-    // threeDayTimerHourTexs
-    static TexturePtr D_801BFB6C[] = {
+    static TexturePtr sThreeDayClockHourTextures[] = {
         gThreeDayClockHour12Tex, gThreeDayClockHour1Tex, gThreeDayClockHour2Tex,  gThreeDayClockHour3Tex,
         gThreeDayClockHour4Tex,  gThreeDayClockHour5Tex, gThreeDayClockHour6Tex,  gThreeDayClockHour7Tex,
         gThreeDayClockHour8Tex,  gThreeDayClockHour9Tex, gThreeDayClockHour10Tex, gThreeDayClockHour11Tex,
@@ -4347,8 +4345,7 @@ void Interface_DrawClock(PlayState* play) {
     static s16 D_801BFC08[] = { 100, 0 };   // finalHoursClockFrameEnvRedTargets
     static s16 D_801BFC0C[] = { 30, 0 };    // finalHoursClockFrameEnvGreenTargets
     static s16 D_801BFC10[] = { 100, 0 };   // finalHoursClockFrameEnvBlueTargets
-    // finalHoursCounterDigitTex
-    static TexturePtr D_801BFC14[] = {
+    static TexturePtr sFinalHoursDigitTextures[] = {
         gFinalHoursClockDigit0Tex, gFinalHoursClockDigit1Tex, gFinalHoursClockDigit2Tex, gFinalHoursClockDigit3Tex,
         gFinalHoursClockDigit4Tex, gFinalHoursClockDigit5Tex, gFinalHoursClockDigit6Tex, gFinalHoursClockDigit7Tex,
         gFinalHoursClockDigit8Tex, gFinalHoursClockDigit9Tex, gFinalHoursClockColonTex,
@@ -4377,7 +4374,7 @@ void Interface_DrawClock(PlayState* play) {
 
     OPEN_DISPS(play->state.gfxCtx);
 
-    if (REG(15) != 0) {
+    if (R_TIME_SPEED != 0) {
         if ((msgCtx->msgMode == 0) || ((play->actorCtx.flags & ACTORCTX_FLAG_1) && !Play_InCsMode(play)) ||
             (msgCtx->msgMode == 0) || ((msgCtx->currentTextId >= 0x100) && (msgCtx->currentTextId <= 0x200)) ||
             (gSaveContext.gameMode == 3)) {
@@ -4389,33 +4386,33 @@ void Interface_DrawClock(PlayState* play) {
                          */
                         if (((void)0, gSaveContext.hudVisibility) == HUD_VISIBILITY_ALL) {
                             if (func_801234D4(play) != 0) {
-                                D_801BFB2C = 80;
+                                sThreeDayClockAlpha = 80;
                                 D_801BFB30 = 5;
                                 D_801BFB34 = 20;
                             } else if (D_801BFB34 != 0) {
                                 D_801BFB34--;
                             } else if (D_801BFB30 != 0) {
-                                colorStep = ABS_ALT(D_801BFB2C - 255) / D_801BFB30;
-                                D_801BFB2C += colorStep;
+                                colorStep = ABS_ALT(sThreeDayClockAlpha - 255) / D_801BFB30;
+                                sThreeDayClockAlpha += colorStep;
 
-                                if (D_801BFB2C >= 255) {
-                                    D_801BFB2C = 255;
+                                if (sThreeDayClockAlpha >= 255) {
+                                    sThreeDayClockAlpha = 255;
                                     D_801BFB30 = 0;
                                 }
                             } else {
                                 if (play->actorCtx.flags & ACTORCTX_FLAG_1) {
-                                    D_801BFB2C = 255;
+                                    sThreeDayClockAlpha = 255;
                                 } else {
-                                    D_801BFB2C = interfaceCtx->bAlpha;
+                                    sThreeDayClockAlpha = interfaceCtx->bAlpha;
                                 }
                                 D_801BFB34 = 0;
                                 D_801BFB30 = 0;
                             }
                         } else {
                             if (play->actorCtx.flags & ACTORCTX_FLAG_1) {
-                                D_801BFB2C = 255;
+                                sThreeDayClockAlpha = 255;
                             } else {
-                                D_801BFB2C = interfaceCtx->bAlpha;
+                                sThreeDayClockAlpha = interfaceCtx->bAlpha;
                             }
                             D_801BFB34 = 0;
                             D_801BFB30 = 0;
@@ -4430,7 +4427,7 @@ void Interface_DrawClock(PlayState* play) {
                              */
                             gDPSetAlphaCompare(OVERLAY_DISP++, G_AC_THRESHOLD);
                             gDPSetRenderMode(OVERLAY_DISP++, G_RM_XLU_SURF, G_RM_XLU_SURF2);
-                            gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 130, 130, 130, D_801BFB2C);
+                            gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 130, 130, 130, sThreeDayClockAlpha);
                             gDPSetCombineLERP(OVERLAY_DISP++, 0, 0, 0, PRIMITIVE, TEXEL0, 0, PRIMITIVE, 0, 0, 0, 0,
                                               PRIMITIVE, TEXEL0, 0, PRIMITIVE, 0);
 
@@ -4441,7 +4438,7 @@ void Interface_DrawClock(PlayState* play) {
                              * Draw Clock's Border
                              */
                             gDPPipeSync(OVERLAY_DISP++);
-                            gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 255, 255, 255, D_801BFB2C);
+                            gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 255, 255, 255, sThreeDayClockAlpha);
                             gDPSetCombineLERP(OVERLAY_DISP++, 0, 0, 0, PRIMITIVE, TEXEL0, 0, PRIMITIVE, 0, 0, 0, 0,
                                               PRIMITIVE, TEXEL0, 0, PRIMITIVE, 0);
 
@@ -4524,12 +4521,13 @@ void Interface_DrawClock(PlayState* play) {
                                     gDPSetCombineLERP(OVERLAY_DISP++, PRIMITIVE, ENVIRONMENT, TEXEL0, ENVIRONMENT,
                                                       TEXEL0, 0, PRIMITIVE, 0, PRIMITIVE, ENVIRONMENT, TEXEL0,
                                                       ENVIRONMENT, TEXEL0, 0, PRIMITIVE, 0);
-                                    gDPSetPrimColor(OVERLAY_DISP++, 0, 0, D_801BFBCC, D_801BFBD0, 255, D_801BFB2C);
+                                    gDPSetPrimColor(OVERLAY_DISP++, 0, 0, D_801BFBCC, D_801BFBD0, 255,
+                                                    sThreeDayClockAlpha);
                                     gDPSetEnvColor(OVERLAY_DISP++, D_801BFBD8, D_801BFBDC, D_801BFBE0, 0);
                                 } else {
                                     // Clock diamond is green for regular daySpeed
                                     gDPSetCombineMode(OVERLAY_DISP++, G_CC_MODULATEIA_PRIM, G_CC_MODULATEIA_PRIM);
-                                    gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 0, 170, 100, D_801BFB2C);
+                                    gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 0, 170, 100, sThreeDayClockAlpha);
                                 }
 
                                 OVERLAY_DISP = Gfx_DrawTexRectIA8(OVERLAY_DISP, gThreeDayClockDiamondTex, 40, 32, 140,
@@ -4539,7 +4537,7 @@ void Interface_DrawClock(PlayState* play) {
                                  * Draw Three-Day Clock's Day-Number over Diamond
                                  */
                                 gDPPipeSync(OVERLAY_DISP++);
-                                gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 255, 255, 155, D_801BFB2C);
+                                gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 255, 255, 155, sThreeDayClockAlpha);
 
                                 OVERLAY_DISP = Gfx_DrawTexRectIA8(OVERLAY_DISP, interfaceCtx->doActionSegment + 0x780,
                                                                   48, 27, 137, 192, 48, 27, 1 << 10, 1 << 10);
@@ -4570,8 +4568,8 @@ void Interface_DrawClock(PlayState* play) {
 
                                 gSPMatrix(OVERLAY_DISP++, &gIdentityMtx, G_MTX_NOPUSH | G_MTX_LOAD | G_MTX_MODELVIEW);
 
-                                if (D_801BFB2C != 255) {
-                                    gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 255, 255, 110, D_801BFB2C);
+                                if (sThreeDayClockAlpha != 255) {
+                                    gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 255, 255, 110, sThreeDayClockAlpha);
                                 } else {
                                     gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 255, 255, 110, D_801BF97C);
                                 }
@@ -4601,7 +4599,7 @@ void Interface_DrawClock(PlayState* play) {
 
                             // determines the current hour
                             for (sp1C6 = 0; sp1C6 <= 24; sp1C6++) {
-                                if (((void)0, gSaveContext.save.time) < D_801BFB38[sp1C6 + 1]) {
+                                if (((void)0, gSaveContext.save.time) < sThreeDayClockHours[sp1C6 + 1]) {
                                     break;
                                 }
                             }
@@ -4615,7 +4613,7 @@ void Interface_DrawClock(PlayState* play) {
 
                             gDPPipeSync(OVERLAY_DISP++);
                             gDPSetCombineMode(OVERLAY_DISP++, G_CC_MODULATEIA_PRIM, G_CC_MODULATEIA_PRIM);
-                            gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 255, 100, 110, D_801BFB2C);
+                            gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 255, 100, 110, sThreeDayClockAlpha);
 
                             Matrix_Translate(sp1D8, temp_f14, 0.0f, MTXMODE_NEW);
                             Matrix_Scale(1.0f, 1.0f, 1.0f, MTXMODE_APPLY);
@@ -4634,7 +4632,7 @@ void Interface_DrawClock(PlayState* play) {
 
                             gDPPipeSync(OVERLAY_DISP++);
                             gDPSetCombineMode(OVERLAY_DISP++, G_CC_MODULATEIA_PRIM, G_CC_MODULATEIA_PRIM);
-                            gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 255, 255, 55, D_801BFB2C);
+                            gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 255, 255, 55, sThreeDayClockAlpha);
 
                             Matrix_Translate(sp1D8, temp_f14, 0.0f, MTXMODE_NEW);
                             Matrix_Scale(1.0f, 1.0f, 1.0f, MTXMODE_APPLY);
@@ -4666,14 +4664,15 @@ void Interface_DrawClock(PlayState* play) {
                             gDPPipeSync(OVERLAY_DISP++);
                             gDPSetCombineLERP(OVERLAY_DISP++, 0, 0, 0, PRIMITIVE, TEXEL0, 0, PRIMITIVE, 0, 0, 0, 0,
                                               PRIMITIVE, TEXEL0, 0, PRIMITIVE, 0);
-                            gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 0, 0, 0, D_801BFB2C);
+                            gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 0, 0, 0, sThreeDayClockAlpha);
                             gSPVertex(OVERLAY_DISP++, &interfaceCtx->actionVtx[24], 8, 0);
 
-                            OVERLAY_DISP = Gfx_DrawTexQuad4b(OVERLAY_DISP, D_801BFB6C[sp1C6], 4, 16, 11, 0);
+                            OVERLAY_DISP =
+                                Gfx_DrawTexQuad4b(OVERLAY_DISP, sThreeDayClockHourTextures[sp1C6], 4, 16, 11, 0);
 
                             // Colours the Three-Day Clocks's Hour Digit Above the Sun
                             gDPPipeSync(OVERLAY_DISP++);
-                            gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 255, 255, 155, D_801BFB2C);
+                            gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 255, 255, 155, sThreeDayClockAlpha);
                             gSP1Quadrangle(OVERLAY_DISP++, 4, 6, 7, 5, 0);
 
                             /**
@@ -4690,14 +4689,15 @@ void Interface_DrawClock(PlayState* play) {
                             gDPPipeSync(OVERLAY_DISP++);
                             gDPSetCombineLERP(OVERLAY_DISP++, 0, 0, 0, PRIMITIVE, TEXEL0, 0, PRIMITIVE, 0, 0, 0, 0,
                                               PRIMITIVE, TEXEL0, 0, PRIMITIVE, 0);
-                            gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 0, 0, 0, D_801BFB2C);
+                            gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 0, 0, 0, sThreeDayClockAlpha);
                             gSPVertex(OVERLAY_DISP++, &interfaceCtx->actionVtx[32], 8, 0);
 
-                            OVERLAY_DISP = Gfx_DrawTexQuad4b(OVERLAY_DISP, D_801BFB6C[sp1C6], 4, 16, 11, 0);
+                            OVERLAY_DISP =
+                                Gfx_DrawTexQuad4b(OVERLAY_DISP, sThreeDayClockHourTextures[sp1C6], 4, 16, 11, 0);
 
                             // Colours the Three-Day Clocks's Hour Digit Above the Moon
                             gDPPipeSync(OVERLAY_DISP++);
-                            gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 255, 255, 155, D_801BFB2C);
+                            gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 255, 255, 155, sThreeDayClockAlpha);
                             gSP1Quadrangle(OVERLAY_DISP++, 4, 6, 7, 5, 0);
 
                             // Unknown
@@ -4757,7 +4757,7 @@ void Interface_DrawClock(PlayState* play) {
                                     }
                                 }
 
-                                sp1E6 = D_801BFB2C;
+                                sp1E6 = sThreeDayClockAlpha;
                                 if (sp1E6 != 0) {
                                     sp1E6 = 255;
                                 }
@@ -4832,9 +4832,9 @@ void Interface_DrawClock(PlayState* play) {
                                 for (sp1C6 = 0; sp1C6 < 8; sp1C6++) {
                                     index = D_801BFC40[sp1C6];
 
-                                    OVERLAY_DISP =
-                                        Gfx_DrawTexRectI8(OVERLAY_DISP, D_801BFC14[finalHoursClockSlots[sp1C6]], 8, 8,
-                                                          index, 205, 8, 8, 1 << 10, 1 << 10);
+                                    OVERLAY_DISP = Gfx_DrawTexRectI8(
+                                        OVERLAY_DISP, sFinalHoursDigitTextures[finalHoursClockSlots[sp1C6]], 8, 8,
+                                        index, 205, 8, 8, 1 << 10, 1 << 10);
                                 }
                             }
                         }
@@ -4846,17 +4846,17 @@ void Interface_DrawClock(PlayState* play) {
     CLOSE_DISPS(play->state.gfxCtx);
 }
 #else
-s16 D_801BFB2C = 255;
+s16 sThreeDayClockAlpha = 255;
 s16 D_801BFB30 = 0;
 s16 D_801BFB34 = 0;
-u16 D_801BFB38[] = {
+u16 sThreeDayClockHours[] = {
     CLOCK_TIME(0, 0),  CLOCK_TIME(1, 0),  CLOCK_TIME(2, 0),  CLOCK_TIME(3, 0),  CLOCK_TIME(4, 0),
     CLOCK_TIME(5, 0),  CLOCK_TIME(6, 0),  CLOCK_TIME(7, 0),  CLOCK_TIME(8, 0),  CLOCK_TIME(9, 0),
     CLOCK_TIME(10, 0), CLOCK_TIME(11, 0), CLOCK_TIME(12, 0), CLOCK_TIME(13, 0), CLOCK_TIME(14, 0),
     CLOCK_TIME(15, 0), CLOCK_TIME(16, 0), CLOCK_TIME(17, 0), CLOCK_TIME(18, 0), CLOCK_TIME(19, 0),
     CLOCK_TIME(20, 0), CLOCK_TIME(21, 0), CLOCK_TIME(22, 0), CLOCK_TIME(23, 0), CLOCK_TIME(24, 0) - 1,
 };
-TexturePtr D_801BFB6C[] = {
+TexturePtr sThreeDayClockHourTextures[] = {
     gThreeDayClockHour12Tex, gThreeDayClockHour1Tex, gThreeDayClockHour2Tex,  gThreeDayClockHour3Tex,
     gThreeDayClockHour4Tex,  gThreeDayClockHour5Tex, gThreeDayClockHour6Tex,  gThreeDayClockHour7Tex,
     gThreeDayClockHour8Tex,  gThreeDayClockHour9Tex, gThreeDayClockHour10Tex, gThreeDayClockHour11Tex,
@@ -4882,7 +4882,7 @@ s16 D_801BFC04[] = { 255, 0 };
 s16 D_801BFC08[] = { 100, 0 };
 s16 D_801BFC0C[] = { 30, 0 };
 s16 D_801BFC10[] = { 100, 0 };
-TexturePtr D_801BFC14[] = {
+TexturePtr sFinalHoursDigitTextures[] = {
     gFinalHoursClockDigit0Tex, gFinalHoursClockDigit1Tex, gFinalHoursClockDigit2Tex, gFinalHoursClockDigit3Tex,
     gFinalHoursClockDigit4Tex, gFinalHoursClockDigit5Tex, gFinalHoursClockDigit6Tex, gFinalHoursClockDigit7Tex,
     gFinalHoursClockDigit8Tex, gFinalHoursClockDigit9Tex, gFinalHoursClockColonTex,
@@ -5032,10 +5032,10 @@ void Interface_UpdateMinigamePerfectType1(PlayState* play) {
 }
 
 s16 D_801BFC6C[] = {
-    0x004E, 0x0036, 0x001D, 0x0005, 0xFFEE, 0xFFD6, 0xFFBD, 0xFFAB,
+    78, 54, 29, 5, 0xFFEE, 0xFFD6, 0xFFBD, 0xFFAB,
 };
 s16 D_801BFC7C[] = {
-    0x00B4, 0x00B4, 0x00B4, 0x00B4, 0xFF4C, 0xFF4C, 0xFF4C, 0xFF4C,
+    180, 180, 180, 180, 0xFF4C, 0xFF4C, 0xFF4C, 0xFF4C,
 };
 s16 sMinigamePerfectType2PrimColorTargets[2][3] = {
     { 255, 255, 255 },
@@ -5182,7 +5182,7 @@ void Interface_UpdateMinigamePerfectType2(PlayState* play) {
 }
 
 s16 D_801BFC98[] = {
-    0x004E, 0x0036, 0x001D, 0x0005, 0xFFEE, 0xFFD6, 0xFFBD, 0xFFAB,
+    78, 54, 29, 5, 0xFFEE, 0xFFD6, 0xFFBD, 0xFFAB,
 };
 u16 D_801BFCA8[] = {
     0xC000, 0xE000, 0x0000, 0x2000, 0xA000, 0x8000, 0x6000, 0x4000,
@@ -5521,9 +5521,9 @@ void Interface_DrawTimers(PlayState* play) {
                         if (interfaceCtx->magicAlpha != 255) {
                             gSaveContext.timerY[sTimerId] = 22;
                         } else if (gSaveContext.save.playerData.healthCapacity > 0xA0) {
-                            gSaveContext.timerY[sTimerId] = 54;
+                            gSaveContext.timerY[sTimerId] = 54; // two rows of hearts
                         } else {
-                            gSaveContext.timerY[sTimerId] = 46;
+                            gSaveContext.timerY[sTimerId] = 46; // one row of hearts
                         }
 
                         if ((interfaceCtx->minigameState == MINIGAME_STATE_COUNTDOWN_GO) ||
@@ -5578,9 +5578,9 @@ void Interface_DrawTimers(PlayState* play) {
                         } else {
                             gSaveContext.timerX[sTimerId] = 26;
                             if (gSaveContext.save.playerData.healthCapacity > 0xA0) {
-                                gSaveContext.timerY[sTimerId] = 54;
+                                gSaveContext.timerY[sTimerId] = 54; // two rows of hearts
                             } else {
-                                gSaveContext.timerY[sTimerId] = 46;
+                                gSaveContext.timerY[sTimerId] = 46; // one row of hearts
                             }
                         }
 
@@ -5939,12 +5939,12 @@ void Interface_UpdateBottleTimers(PlayState* play) {
 
 void Interface_DrawMinigameIcons(PlayState* play) {
     InterfaceContext* interfaceCtx = &play->interfaceCtx;
-    s16 sp42;
-    s16 sp40;
-    s16 sp3E;
-    s16 sp3C;
-    s16 phi_a0;
-    s16 phi_a1;
+    s16 i;
+    s16 numDigitsDrawn;
+    s16 rectX;
+    s16 rectY;
+    s16 width;
+    s16 height;
 
     OPEN_DISPS(play->state.gfxCtx);
 
@@ -5952,25 +5952,25 @@ void Interface_DrawMinigameIcons(PlayState* play) {
 
     if ((play->pauseCtx.state == 0) && (play->pauseCtx.debugEditor == DEBUG_EDITOR_NONE)) {
         // Carrots rendering if the action corresponds to riding a horse
-        if (interfaceCtx->unk_212 == 8) {
+        if (interfaceCtx->aButtonHorseDoAction == DO_ACTION_FASTER) {
             // Load Carrot Icon
             gDPLoadTextureBlock(OVERLAY_DISP++, gCarrotIconTex, G_IM_FMT_RGBA, G_IM_SIZ_32b, 16, 16, 0,
                                 G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMASK, G_TX_NOMASK,
                                 G_TX_NOLOD, G_TX_NOLOD);
 
-            sp3E = 110;
-            sp3C = (interfaceCtx->minigameState != MINIGAME_STATE_NONE) ? 200 : 56;
+            rectX = 110;
+            rectY = (interfaceCtx->minigameState != MINIGAME_STATE_NONE) ? 200 : 56;
 
             // Draw 6 carrots
-            for (sp42 = 1; sp42 < 7; sp42++, sp3E += 16) {
+            for (i = 1; i < 7; i++, rectX += 16) {
                 // Carrot Color (based on availability)
-                if ((interfaceCtx->numHorseBoosts == 0) || (interfaceCtx->numHorseBoosts < sp42)) {
+                if ((interfaceCtx->numHorseBoosts == 0) || (interfaceCtx->numHorseBoosts < i)) {
                     gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 0, 150, 255, interfaceCtx->aAlpha);
                 } else {
                     gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 255, 255, 255, interfaceCtx->aAlpha);
                 }
 
-                gSPTextureRectangle(OVERLAY_DISP++, sp3E << 2, sp3C << 2, (sp3E + 16) << 2, (sp3C + 16) << 2,
+                gSPTextureRectangle(OVERLAY_DISP++, rectX << 2, rectY << 2, (rectX + 16) << 2, (rectY + 16) << 2,
                                     G_TX_RENDERTILE, 0, 0, 1 << 10, 1 << 10);
             }
         }
@@ -5979,13 +5979,13 @@ void Interface_DrawMinigameIcons(PlayState* play) {
             gDPPipeSync(OVERLAY_DISP++);
             gDPSetCombineLERP(OVERLAY_DISP++, PRIMITIVE, ENVIRONMENT, TEXEL0, ENVIRONMENT, TEXEL0, 0, PRIMITIVE, 0,
                               PRIMITIVE, ENVIRONMENT, TEXEL0, ENVIRONMENT, TEXEL0, 0, PRIMITIVE, 0);
-            phi_a0 = 0x18;
-            phi_a1 = 0x10;
-            sp3E = 0x14;
+            width = 24;
+            height = 16;
+            rectX = 20;
             if (gSaveContext.save.playerData.healthCapacity > 0xA0) {
-                sp3C = 0x4B;
+                rectY = 75; // two rows of hearts
             } else {
-                sp3C = 0x43;
+                rectY = 67; // one row of hearts
             }
 
             if (gSaveContext.save.entrance == ENTRANCE(WATERFALL_RAPIDS, 1)) {
@@ -6001,9 +6001,9 @@ void Interface_DrawMinigameIcons(PlayState* play) {
                                     G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMIRROR | G_TX_WRAP, G_TX_NOMASK, G_TX_NOMASK,
                                     G_TX_NOLOD, G_TX_NOLOD);
             } else if (play->sceneId == SCENE_30GYOSON) {
-                phi_a0 = 0x10;
-                phi_a1 = 0x1E;
-                sp3E = 0x18;
+                width = 16;
+                height = 30;
+                rectX = 24;
                 gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 255, 100, 75, interfaceCtx->bAlpha);
                 gDPSetEnvColor(OVERLAY_DISP++, 55, 55, 0, 255);
                 gDPLoadTextureBlock(OVERLAY_DISP++, gFishermanMinigameTorchIconTex, G_IM_FMT_IA, G_IM_SIZ_8b, 16, 30, 0,
@@ -6017,31 +6017,31 @@ void Interface_DrawMinigameIcons(PlayState* play) {
                                     G_TX_NOLOD, G_TX_NOLOD);
             }
 
-            gSPTextureRectangle(OVERLAY_DISP++, (sp3E << 2), (sp3C << 2), ((sp3E + phi_a0) << 2),
-                                ((sp3C + phi_a1) << 2), G_TX_RENDERTILE, 0, 0, 1 << 10, 1 << 10);
+            gSPTextureRectangle(OVERLAY_DISP++, (rectX << 2), (rectY << 2), ((rectX + width) << 2),
+                                ((rectY + height) << 2), G_TX_RENDERTILE, 0, 0, 1 << 10, 1 << 10);
             gDPPipeSync(OVERLAY_DISP++);
             gDPSetPrimColor(OVERLAY_DISP++, 0, 0, 255, 255, 255, interfaceCtx->bAlpha);
             gDPSetCombineLERP(OVERLAY_DISP++, 0, 0, 0, PRIMITIVE, TEXEL0, 0, PRIMITIVE, 0, 0, 0, 0, PRIMITIVE, TEXEL0,
                               0, PRIMITIVE, 0);
 
             if (play->sceneId == SCENE_30GYOSON) {
-                sp3E += 0x14;
+                rectX += 20;
                 if (gSaveContext.save.playerData.healthCapacity > 0xA0) {
-                    sp3C = 0x57;
+                    rectY = 87; // two rows of hearts
                 } else {
-                    sp3C = 0x4F;
+                    rectY = 79; // one row of hearts
                 }
             } else {
-                sp3E += 0x1A;
+                rectX += 26;
             }
 
-            for (sp42 = sp40 = 0; sp42 < 4; sp42++) {
-                if ((sMinigameScoreDigits[sp42] != 0) || (sp40 != 0) || (sp42 >= 3)) {
-                    OVERLAY_DISP = Gfx_DrawTexRectI8(OVERLAY_DISP,
-                                                     ((u8*)gCounterDigit0Tex + (8 * 16 * sMinigameScoreDigits[sp42])),
-                                                     8, 0x10, sp3E, sp3C - 2, 9, 0xFA, 0x370, 0x370);
-                    sp3E += 9;
-                    sp40++;
+            for (i = 0, numDigitsDrawn = 0; i < 4; i++) {
+                if ((sMinigameScoreDigits[i] != 0) || (numDigitsDrawn != 0) || (i >= 3)) {
+                    OVERLAY_DISP =
+                        Gfx_DrawTexRectI8(OVERLAY_DISP, ((u8*)gCounterDigit0Tex + (8 * 16 * sMinigameScoreDigits[i])),
+                                          8, 0x10, rectX, rectY - 2, 9, 0xFA, 0x370, 0x370);
+                    rectX += 9;
+                    numDigitsDrawn++;
                 }
             }
 
@@ -6113,7 +6113,7 @@ void Interface_Draw(PlayState* play) {
 
     if (pauseCtx->debugEditor == DEBUG_EDITOR_NONE) {
         Interface_SetVertices(play);
-        Interface_SetView2(interfaceCtx);
+        Interface_SetOrthoView(interfaceCtx);
 
         // Draw Grandma's Story
         if (interfaceCtx->storyDmaStatus == STORY_DMA_DONE) {
@@ -6332,12 +6332,13 @@ void Interface_Draw(PlayState* play) {
         Interface_DrawItemButtons(play);
 
         if (player->transformation == ((void)0, gSaveContext.save.playerForm)) {
-            func_80118084(play);
+            Interface_DrawBButtonIcons(play);
         }
+        Interface_DrawCButtonIcons(play);
 
-        func_80118890(play);
-        func_80118BA4(play);
-        func_80119030(play);
+        Interface_DrawAButton(play);
+
+        Interface_DrawPauseMenuEquippingIcons(play);
 
         // Draw either the minigame countdown or the three-day clock
         if ((play->pauseCtx.state == 0) && (play->pauseCtx.debugEditor == DEBUG_EDITOR_NONE)) {
@@ -6519,15 +6520,14 @@ void Interface_AllocStory(PlayState* play) {
 }
 
 void Interface_Update(PlayState* play) {
-    static u8 D_801BFD94 = 0;
-    static s16 D_801BFD98 = 0;
-    static s16 D_801BFD9C = 0;
+    static u8 sIsSunsPlayedAtDay = false;
+    static s16 sPrevTimeSpeed = 0;
     InterfaceContext* interfaceCtx = &play->interfaceCtx;
     MessageContext* msgCtx = &play->msgCtx;
     Player* player = GET_PLAYER(play);
     s16 dimmingAlpha;
     s16 risingAlpha;
-    u16 action;
+    u16 aButtonDoAction;
 
     // Update buttons
     if ((play->pauseCtx.state == 0) && (play->pauseCtx.debugEditor == DEBUG_EDITOR_NONE)) {
@@ -6645,6 +6645,7 @@ void Interface_Update(PlayState* play) {
 
     Map_Update(play);
 
+    // Update health
     if (gSaveContext.healthAccumulator != 0) {
         gSaveContext.healthAccumulator -= 4;
         gSaveContext.save.playerData.health += 4;
@@ -6660,8 +6661,9 @@ void Interface_Update(PlayState* play) {
     }
 
     LifeMeter_UpdateSizeAndBeep(play);
-    sEnvTimerType = Player_GetEnvTimerType(play);
 
+    // Update Env Timer Part 1
+    sEnvTimerType = Player_GetEnvTimerType(play);
     if (sEnvTimerType == PLAYER_ENV_TIMER_HOTROOM) {
         if (GET_CUR_EQUIP_VALUE(EQUIP_TYPE_TUNIC) == EQUIP_VALUE_TUNIC_GORON) {
             sEnvTimerType = PLAYER_ENV_TIMER_NONE;
@@ -6675,7 +6677,7 @@ void Interface_Update(PlayState* play) {
 
     LifeMeter_UpdateColors(play);
 
-    // Update Rupees
+    // Update rupees
     if (gSaveContext.rupeeAccumulator != 0) {
         if (gSaveContext.rupeeAccumulator > 0) {
             if (gSaveContext.save.playerData.rupees < CUR_CAPACITY(UPG_WALLET)) {
@@ -6705,6 +6707,7 @@ void Interface_Update(PlayState* play) {
         }
     }
 
+    // Update minigame perfect
     if ((play->pauseCtx.state == 0) && (play->pauseCtx.debugEditor == DEBUG_EDITOR_NONE)) {
         if (interfaceCtx->isMinigamePerfect) {
             if (interfaceCtx->minigamePerfectType == MINIGAME_PERFECT_TYPE_1) {
@@ -6717,7 +6720,7 @@ void Interface_Update(PlayState* play) {
         }
     }
 
-    // Update Minigame State
+    // Update minigame State
     if ((play->pauseCtx.state == 0) && (play->pauseCtx.debugEditor == DEBUG_EDITOR_NONE)) {
         if (interfaceCtx->minigameState) { // != MINIGAME_STATE_NONE
             switch (interfaceCtx->minigameState) {
@@ -6768,13 +6771,13 @@ void Interface_Update(PlayState* play) {
         }
     }
 
-    // Update Do-Actions
-    switch (interfaceCtx->unk_210) {
-        case 1:
-            interfaceCtx->unk_218 += 10466.667f;
-            if (interfaceCtx->unk_218 >= 15700.0f) {
-                interfaceCtx->unk_218 = -15700.0f;
-                interfaceCtx->unk_210 = 2;
+    // Update A Button
+    switch (interfaceCtx->aButtonState) {
+        case A_BTN_STATE_1:
+            interfaceCtx->aButtonRoll += 10466.667f;
+            if (interfaceCtx->aButtonRoll >= 15700.0f) {
+                interfaceCtx->aButtonRoll = -15700.0f;
+                interfaceCtx->aButtonState = A_BTN_STATE_2;
 
                 if ((msgCtx->msgMode != 0) && (msgCtx->unk12006 == 0x26)) {
                     XREG(31) = -14;
@@ -6784,47 +6787,50 @@ void Interface_Update(PlayState* play) {
             }
             break;
 
-        case 2:
-            interfaceCtx->unk_218 += 10466.667f;
-            if (interfaceCtx->unk_218 >= 0.0f) {
-                interfaceCtx->unk_218 = 0.0f;
-                interfaceCtx->unk_210 = 0;
-                interfaceCtx->unk_212 = interfaceCtx->unk_214;
-                action = interfaceCtx->unk_212;
-                if ((action == DO_ACTION_MAX) || (action == DO_ACTION_MAX + 1)) {
-                    action = DO_ACTION_NONE;
+        case A_BTN_STATE_2:
+            interfaceCtx->aButtonRoll += 10466.667f;
+            if (interfaceCtx->aButtonRoll >= 0.0f) {
+                interfaceCtx->aButtonRoll = 0.0f;
+                interfaceCtx->aButtonState = A_BTN_STATE_0;
+                interfaceCtx->aButtonHorseDoAction = interfaceCtx->aButtonDoAction;
+                aButtonDoAction = interfaceCtx->aButtonHorseDoAction;
+                if ((aButtonDoAction == DO_ACTION_MAX) || (aButtonDoAction == DO_ACTION_MAX + 1)) {
+                    aButtonDoAction = DO_ACTION_NONE;
                 }
-                Interface_LoadActionLabel(&play->interfaceCtx, action, 0);
+                Interface_LoadAButtonDoActionLabel(&play->interfaceCtx, aButtonDoAction, 0);
             }
             break;
 
-        case 3:
-            interfaceCtx->unk_218 += 10466.667f;
-            if (interfaceCtx->unk_218 >= 15700.0f) {
-                interfaceCtx->unk_218 = -15700.0f;
-                interfaceCtx->unk_210 = 2;
+        case A_BTN_STATE_3:
+            interfaceCtx->aButtonRoll += 10466.667f;
+            if (interfaceCtx->aButtonRoll >= 15700.0f) {
+                interfaceCtx->aButtonRoll = -15700.0f;
+                interfaceCtx->aButtonState = A_BTN_STATE_2;
             }
             break;
 
-        case 4:
-            interfaceCtx->unk_218 += 10466.667f;
-            if (interfaceCtx->unk_218 >= 0.0f) {
-                interfaceCtx->unk_218 = 0.0f;
-                interfaceCtx->unk_210 = 0;
-                interfaceCtx->unk_212 = interfaceCtx->unk_214;
-                action = interfaceCtx->unk_212;
-                if ((action == DO_ACTION_MAX) || (action == DO_ACTION_MAX + 1)) {
-                    action = DO_ACTION_NONE;
+        case A_BTN_STATE_4:
+            interfaceCtx->aButtonRoll += 10466.667f;
+            if (interfaceCtx->aButtonRoll >= 0.0f) {
+                interfaceCtx->aButtonRoll = 0.0f;
+                interfaceCtx->aButtonState = A_BTN_STATE_0;
+                interfaceCtx->aButtonHorseDoAction = interfaceCtx->aButtonDoAction;
+                aButtonDoAction = interfaceCtx->aButtonHorseDoAction;
+                if ((aButtonDoAction == DO_ACTION_MAX) || (aButtonDoAction == DO_ACTION_MAX + 1)) {
+                    aButtonDoAction = DO_ACTION_NONE;
                 }
 
-                Interface_LoadActionLabel(&play->interfaceCtx, action, 0);
+                Interface_LoadAButtonDoActionLabel(&play->interfaceCtx, aButtonDoAction, 0);
             }
             break;
+
+        default: // A_BTN_STATE_0
+            break;
     }
 
     // Update Magic
     if (!(player->stateFlags1 & PLAYER_STATE1_200)) {
-        if (XREG(4) == 1) {
+        if (R_MAGIC_DBG_SET_UPGRADE == MAGIC_DBG_SET_UPGRADE_DOUBLE_METER) {
             // Upgrade to double magic
             if (!gSaveContext.save.playerData.isMagicAcquired) {
                 gSaveContext.save.playerData.isMagicAcquired = true;
@@ -6832,8 +6838,8 @@ void Interface_Update(PlayState* play) {
             gSaveContext.save.playerData.isDoubleMagicAcquired = true;
             gSaveContext.save.playerData.magic = MAGIC_DOUBLE_METER;
             gSaveContext.save.playerData.magicLevel = 0;
-            XREG(4) = 0;
-        } else if (XREG(4) == -1) {
+            R_MAGIC_DBG_SET_UPGRADE = MAGIC_DBG_SET_UPGRADE_NO_ACTION;
+        } else if (R_MAGIC_DBG_SET_UPGRADE == MAGIC_DBG_SET_UPGRADE_NORMAL_METER) {
             // Upgrade to normal magic
             if (!gSaveContext.save.playerData.isMagicAcquired) {
                 gSaveContext.save.playerData.isMagicAcquired = true;
@@ -6841,7 +6847,7 @@ void Interface_Update(PlayState* play) {
             gSaveContext.save.playerData.isDoubleMagicAcquired = false;
             gSaveContext.save.playerData.magic = MAGIC_NORMAL_METER;
             gSaveContext.save.playerData.magicLevel = 0;
-            XREG(4) = 0;
+            R_MAGIC_DBG_SET_UPGRADE = MAGIC_DBG_SET_UPGRADE_NO_ACTION;
         }
 
         if ((gSaveContext.save.playerData.isMagicAcquired) && (gSaveContext.save.playerData.magicLevel == 0)) {
@@ -6857,7 +6863,7 @@ void Interface_Update(PlayState* play) {
         Magic_UpdateAddRequest();
     }
 
-    // Update Env Timer
+    // Update Env Timer Part 2
     if (gSaveContext.timerStates[TIMER_ID_ENV] == TIMER_STATE_OFF) {
         if ((sEnvTimerType == PLAYER_ENV_TIMER_HOTROOM) || (sEnvTimerType == PLAYER_ENV_TIMER_UNDERWATER_FREE)) {
             if (CUR_FORM != PLAYER_FORM_ZORA) {
@@ -6877,7 +6883,7 @@ void Interface_Update(PlayState* play) {
         gSaveContext.timerStates[TIMER_ID_ENV] = TIMER_STATE_OFF;
     }
 
-    // Update minigame
+    // Update Minigame
     if (gSaveContext.minigameStatus == MINIGAME_STATUS_ACTIVE) {
         gSaveContext.minigameScore += interfaceCtx->minigamePoints;
         gSaveContext.minigameHiddenScore += interfaceCtx->minigameHiddenPoints;
@@ -6916,7 +6922,7 @@ void Interface_Update(PlayState* play) {
         }
     }
 
-    // Update sun song
+    // Update Sun Song
     if (gSaveContext.sunsSongState != SUNSSONG_INACTIVE) {
         // exit out of ocarina mode after suns song finishes playing
         if ((msgCtx->ocarinaAction != 0x39) && (gSaveContext.sunsSongState == SUNSSONG_START)) {
@@ -6924,26 +6930,32 @@ void Interface_Update(PlayState* play) {
         }
 
         // handle suns song in areas where time moves
-        if (play->envCtx.timeIncrement != 0) {
+        if (play->envCtx.sceneTimeSpeed != 0) {
             if (gSaveContext.sunsSongState != SUNSSONG_SPEED_TIME) {
-                D_801BFD94 = false;
+                sIsSunsPlayedAtDay = false;
                 if ((gSaveContext.save.time >= CLOCK_TIME(6, 0)) && (gSaveContext.save.time <= CLOCK_TIME(18, 0))) {
-                    D_801BFD94 = true;
+                    sIsSunsPlayedAtDay = true;
                 }
 
                 gSaveContext.sunsSongState = SUNSSONG_SPEED_TIME;
-                D_801BFD98 = REG(15);
-                REG(15) = 400;
-            } else if (!D_801BFD94) {
+                sPrevTimeSpeed = R_TIME_SPEED;
+                R_TIME_SPEED = 400;
+            } else if (!sIsSunsPlayedAtDay) {
+                // Nighttime
                 if ((gSaveContext.save.time >= CLOCK_TIME(6, 0)) && (gSaveContext.save.time <= CLOCK_TIME(18, 0))) {
+                    // Daytime has been reached. End suns song effect
                     gSaveContext.sunsSongState = SUNSSONG_INACTIVE;
-                    REG(15) = D_801BFD98;
+                    R_TIME_SPEED = sPrevTimeSpeed;
+                    play->msgCtx.ocarinaMode = 4;
+                }
+            } else {
+                // Daytime
+                if (gSaveContext.save.time > CLOCK_TIME(18, 0)) {
+                    // Nighttime has been reached. End suns song effect
+                    gSaveContext.sunsSongState = SUNSSONG_INACTIVE;
+                    R_TIME_SPEED = sPrevTimeSpeed;
                     play->msgCtx.ocarinaMode = 4;
                 }
-            } else if (gSaveContext.save.time > CLOCK_TIME(18, 0)) {
-                gSaveContext.sunsSongState = SUNSSONG_INACTIVE;
-                REG(15) = D_801BFD98;
-                play->msgCtx.ocarinaMode = 4;
             }
         } else {
             gSaveContext.sunsSongState = SUNSSONG_SPECIAL;
@@ -7007,7 +7019,7 @@ void Interface_Init(PlayState* play) {
     View_Init(&interfaceCtx->view, play->state.gfxCtx);
 
     interfaceCtx->magicConsumptionTimer = 16;
-    interfaceCtx->unkTimer = 200;
+    interfaceCtx->healthTimer = 200;
 
     parameterStaticSize = SEGMENT_ROM_SIZE(parameter_static);
     interfaceCtx->parameterSegment = THA_AllocEndAlign16(&play->state.heap, parameterStaticSize);
diff --git a/src/code/z_scene.c b/src/code/z_scene.c
index 7b88d4520..2c9edb6aa 100644
--- a/src/code/z_scene.c
+++ b/src/code/z_scene.c
@@ -380,25 +380,25 @@ void Scene_HeaderCmdTimeSettings(PlayState* play, SceneCmd* cmd) {
             (u16)(((cmd->timeSettings.hour + (cmd->timeSettings.min / 60.0f)) * 60.0f) / 0.021972656f);
     }
 
-    if (cmd->timeSettings.unk6 != 0xFF) {
-        play->envCtx.timeIncrement = cmd->timeSettings.unk6;
+    if (cmd->timeSettings.timeSpeed != 0xFF) {
+        play->envCtx.sceneTimeSpeed = cmd->timeSettings.timeSpeed;
     } else {
-        play->envCtx.timeIncrement = 0;
+        play->envCtx.sceneTimeSpeed = 0;
     }
 
-    if ((gSaveContext.save.inventory.items[SLOT_OCARINA] == ITEM_NONE) && (play->envCtx.timeIncrement != 0)) {
-        play->envCtx.timeIncrement = 5;
+    if ((gSaveContext.save.inventory.items[SLOT_OCARINA] == ITEM_NONE) && (play->envCtx.sceneTimeSpeed != 0)) {
+        play->envCtx.sceneTimeSpeed = 5;
     }
 
     if (gSaveContext.sunsSongState == SUNSSONG_INACTIVE) {
-        REG(15) = play->envCtx.timeIncrement;
+        R_TIME_SPEED = play->envCtx.sceneTimeSpeed;
     }
 
     play->envCtx.unk_4 = -(Math_SinS(((void)0, gSaveContext.save.time) - 0x8000) * 120.0f) * 25.0f;
     play->envCtx.unk_8 = (Math_CosS(((void)0, gSaveContext.save.time) - 0x8000) * 120.0f) * 25.0f;
     play->envCtx.unk_C = (Math_CosS(((void)0, gSaveContext.save.time) - 0x8000) * 20.0f) * 25.0f;
 
-    if ((play->envCtx.timeIncrement == 0) && (gSaveContext.save.cutscene < 0xFFF0)) {
+    if ((play->envCtx.sceneTimeSpeed == 0) && (gSaveContext.save.cutscene < 0xFFF0)) {
         gSaveContext.skyboxTime = gSaveContext.save.time;
 
         if ((gSaveContext.skyboxTime >= CLOCK_TIME(4, 0)) && (gSaveContext.skyboxTime < CLOCK_TIME(6, 30))) {
diff --git a/src/overlays/actors/ovl_Dm_Stk/z_dm_stk.c b/src/overlays/actors/ovl_Dm_Stk/z_dm_stk.c
index 2be56dda3..eb387b372 100644
--- a/src/overlays/actors/ovl_Dm_Stk/z_dm_stk.c
+++ b/src/overlays/actors/ovl_Dm_Stk/z_dm_stk.c
@@ -1816,8 +1816,8 @@ void DmStk_Update(Actor* thisx, PlayState* play) {
             (play->msgCtx.currentTextId == 0x5E6) && !FrameAdvance_IsEnabled(&play->state) &&
             (play->transitionTrigger == TRANS_TRIGGER_OFF) && (ActorCutscene_GetCurrentIndex() == -1) &&
             (play->csCtx.state == 0)) {
-            gSaveContext.save.time = ((void)0, gSaveContext.save.time) + (u16)REG(15);
-            if (REG(15) != 0) {
+            gSaveContext.save.time = ((void)0, gSaveContext.save.time) + (u16)R_TIME_SPEED;
+            if (R_TIME_SPEED != 0) {
                 gSaveContext.save.time = ((void)0, gSaveContext.save.time) + (u16)((void)0, gSaveContext.save.daySpeed);
             }
         }
diff --git a/src/overlays/actors/ovl_En_Al/z_en_al.c b/src/overlays/actors/ovl_En_Al/z_en_al.c
index 8792f8038..c97438dee 100644
--- a/src/overlays/actors/ovl_En_Al/z_en_al.c
+++ b/src/overlays/actors/ovl_En_Al/z_en_al.c
@@ -748,7 +748,7 @@ void func_80BDF578(EnAl* this, PlayState* play) {
 void func_80BDF5E8(EnAl* this, PlayState* play) {
     ScheduleOutput sp20;
 
-    this->unk_4E0 = REG(15) + ((void)0, gSaveContext.save.daySpeed);
+    this->unk_4E0 = R_TIME_SPEED + ((void)0, gSaveContext.save.daySpeed);
     if (!Schedule_RunScript(play, D_80BDFC70, &sp20) ||
         ((this->unk_35C != sp20.result) && !func_80BDF390(this, play, &sp20))) {
         this->actor.shape.shadowDraw = NULL;
diff --git a/src/overlays/actors/ovl_En_Aob_01/z_en_aob_01.c b/src/overlays/actors/ovl_En_Aob_01/z_en_aob_01.c
index 575cf2d35..9658aed3c 100644
--- a/src/overlays/actors/ovl_En_Aob_01/z_en_aob_01.c
+++ b/src/overlays/actors/ovl_En_Aob_01/z_en_aob_01.c
@@ -100,7 +100,7 @@ void func_809C10B0(EnAob01* this, s32 arg1) {
 }
 
 void func_809C1124(void) {
-    gSaveContext.save.time = ((void)0, gSaveContext.save.time) + (u16)REG(15);
+    gSaveContext.save.time = ((void)0, gSaveContext.save.time) + (u16)R_TIME_SPEED;
     gSaveContext.save.time = ((void)0, gSaveContext.save.time) + (u16)((void)0, gSaveContext.save.daySpeed);
 }
 
diff --git a/src/overlays/actors/ovl_En_Baba/z_en_baba.c b/src/overlays/actors/ovl_En_Baba/z_en_baba.c
index dcbbee65d..9403b4c4c 100644
--- a/src/overlays/actors/ovl_En_Baba/z_en_baba.c
+++ b/src/overlays/actors/ovl_En_Baba/z_en_baba.c
@@ -654,7 +654,7 @@ void EnBaba_GaveBlastMask(EnBaba* this, PlayState* play) {
 void EnBaba_FollowSchedule(EnBaba* this, PlayState* play) {
     ScheduleOutput scheduleOutput;
 
-    this->timePathTimeSpeed = REG(15) + ((void)0, gSaveContext.save.daySpeed);
+    this->timePathTimeSpeed = R_TIME_SPEED + ((void)0, gSaveContext.save.daySpeed);
 
     if (!Schedule_RunScript(play, sSchedule, &scheduleOutput) ||
         ((this->scheduleResult != scheduleOutput.result) &&
diff --git a/src/overlays/actors/ovl_En_Fishing/z_en_fishing.c b/src/overlays/actors/ovl_En_Fishing/z_en_fishing.c
index baa65bfa3..09a9ea49d 100644
--- a/src/overlays/actors/ovl_En_Fishing/z_en_fishing.c
+++ b/src/overlays/actors/ovl_En_Fishing/z_en_fishing.c
@@ -846,7 +846,7 @@ void EnFishing_Init(Actor* thisx, PlayState* play2) {
 
         D_8090CD04 = 20;
         play->specialEffects = sFishingEffects;
-        REG(15) = 1; // gTimeIncrement in OoT
+        R_TIME_SPEED = 1;
         D_809171FC = 0;
         D_809171F6 = 10;
 
diff --git a/src/overlays/actors/ovl_En_Gm/z_en_gm.c b/src/overlays/actors/ovl_En_Gm/z_en_gm.c
index c85815ee7..bbb88044a 100644
--- a/src/overlays/actors/ovl_En_Gm/z_en_gm.c
+++ b/src/overlays/actors/ovl_En_Gm/z_en_gm.c
@@ -1582,7 +1582,7 @@ void func_80950C24(EnGm* this, PlayState* play) {
 void func_80950CDC(EnGm* this, PlayState* play) {
     ScheduleOutput sp20;
 
-    this->timePathTimeSpeed = REG(15) + ((void)0, gSaveContext.save.daySpeed);
+    this->timePathTimeSpeed = R_TIME_SPEED + ((void)0, gSaveContext.save.daySpeed);
 
     if (!Schedule_RunScript(play, D_80951820, &sp20) ||
         ((this->unk_258 != sp20.result) && !func_80950280(this, play, &sp20))) {
diff --git a/src/overlays/actors/ovl_En_Horse/z_en_horse.c b/src/overlays/actors/ovl_En_Horse/z_en_horse.c
index e58ea297e..49c4fd0a9 100644
--- a/src/overlays/actors/ovl_En_Horse/z_en_horse.c
+++ b/src/overlays/actors/ovl_En_Horse/z_en_horse.c
@@ -3993,9 +3993,9 @@ void func_80886C00(EnHorse* this, PlayState* play) {
 
     if (((this->action == ENHORSE_ACTION_MOUNTED_WALK) || (this->action == ENHORSE_ACTION_MOUNTED_TROT) ||
          (this->action == ENHORSE_ACTION_MOUNTED_GALLOP)) &&
-        (CHECK_BTN_ALL(input->press.button, BTN_A) || (func_801A5100() == 5)) && (play->interfaceCtx.unk_212 == 8) &&
-        !(this->stateFlags & ENHORSE_BOOST) && !(this->stateFlags & ENHORSE_FLAG_8) &&
-        !(this->stateFlags & ENHORSE_FLAG_9)) {
+        (CHECK_BTN_ALL(input->press.button, BTN_A) || (func_801A5100() == 5)) &&
+        (play->interfaceCtx.aButtonHorseDoAction == DO_ACTION_FASTER) && !(this->stateFlags & ENHORSE_BOOST) &&
+        !(this->stateFlags & ENHORSE_FLAG_8) && !(this->stateFlags & ENHORSE_FLAG_9)) {
         if (this->numBoosts > 0) {
             Rumble_Request(0.0f, 180, 20, 100);
             this->stateFlags |= ENHORSE_BOOST;
diff --git a/src/overlays/actors/ovl_En_Ig/z_en_ig.c b/src/overlays/actors/ovl_En_Ig/z_en_ig.c
index bc1ca559b..83319c2d4 100644
--- a/src/overlays/actors/ovl_En_Ig/z_en_ig.c
+++ b/src/overlays/actors/ovl_En_Ig/z_en_ig.c
@@ -876,7 +876,7 @@ void func_80BF2A50(EnIg* this, PlayState* play) {
 void func_80BF2AF8(EnIg* this, PlayState* play) {
     ScheduleOutput sp20;
 
-    this->timePathTimeSpeed = REG(15) + ((void)0, gSaveContext.save.daySpeed);
+    this->timePathTimeSpeed = R_TIME_SPEED + ((void)0, gSaveContext.save.daySpeed);
 
     if (!Schedule_RunScript(play, D_80BF3260, &sp20) ||
         ((this->scheduleResult != sp20.result) && !func_80BF2368(this, play, &sp20))) {
diff --git a/src/overlays/actors/ovl_En_Invadepoh/z_en_invadepoh.c b/src/overlays/actors/ovl_En_Invadepoh/z_en_invadepoh.c
index 2050c7316..b18b4203f 100644
--- a/src/overlays/actors/ovl_En_Invadepoh/z_en_invadepoh.c
+++ b/src/overlays/actors/ovl_En_Invadepoh/z_en_invadepoh.c
@@ -3015,7 +3015,7 @@ void func_80B49C38(EnInvadepoh* this, PlayState* play) {
         if (this->unk378 == 0) {
             temp_v0_2 = func_800FE620(play);
             if (temp_v0_2 > 0) {
-                temp_v0_2 = (REG(15) * -16.0f / temp_v0_2) - 0.5f;
+                temp_v0_2 = (R_TIME_SPEED * -16.0f / temp_v0_2) - 0.5f;
                 this->unk378 = func_80B45550(this, play, SQ(80.0f), temp_v0_2);
             }
         }
@@ -3967,7 +3967,7 @@ void func_80B4C730(EnInvadepoh* this, PlayState* play) {
         if (this->unk378 == 0) {
             temp_v0_2 = func_800FE620(play);
             if (temp_v0_2 > 0) {
-                temp_v0_2 = (REG(15) * -23.0f / temp_v0_2) - 0.5f;
+                temp_v0_2 = (R_TIME_SPEED * -23.0f / temp_v0_2) - 0.5f;
                 this->unk378 = func_80B45550(this, play, SQ(80.0f), temp_v0_2);
             }
         }
diff --git a/src/overlays/actors/ovl_En_Ja/z_en_ja.c b/src/overlays/actors/ovl_En_Ja/z_en_ja.c
index f615c05fe..ef662bb68 100644
--- a/src/overlays/actors/ovl_En_Ja/z_en_ja.c
+++ b/src/overlays/actors/ovl_En_Ja/z_en_ja.c
@@ -301,7 +301,7 @@ void func_80BC2150(EnJa* this, PlayState* play) {
 void func_80BC21A8(EnJa* this, PlayState* play) {
     ScheduleOutput sp18;
 
-    this->unk_35C = REG(15) + ((void)0, gSaveContext.save.daySpeed);
+    this->unk_35C = R_TIME_SPEED + ((void)0, gSaveContext.save.daySpeed);
     if (!Schedule_RunScript(play, D_80BC35F0, &sp18) ||
         ((this->unk_1D8.unk_00 != sp18.result) && !func_80BC20D0(this, play, &sp18))) {
         this->actor.shape.shadowDraw = NULL;
diff --git a/src/overlays/actors/ovl_En_Pm/z_en_pm.c b/src/overlays/actors/ovl_En_Pm/z_en_pm.c
index 1f5aebe64..0da6a331f 100644
--- a/src/overlays/actors/ovl_En_Pm/z_en_pm.c
+++ b/src/overlays/actors/ovl_En_Pm/z_en_pm.c
@@ -1991,7 +1991,7 @@ void func_80AFA4D0(EnPm* this, PlayState* play) {
     u16 sp3C = 0;
     ScheduleOutput sp2C;
 
-    this->timePathTimeSpeed = REG(15) + ((void)0, gSaveContext.save.daySpeed);
+    this->timePathTimeSpeed = R_TIME_SPEED + ((void)0, gSaveContext.save.daySpeed);
     if (this->unk_38C != 0) {
         time = gSaveContext.save.time - D_801F4E78;
         sp3C = gSaveContext.save.time;
diff --git a/src/overlays/actors/ovl_En_Suttari/z_en_suttari.c b/src/overlays/actors/ovl_En_Suttari/z_en_suttari.c
index 4f3882aa7..12459bfa4 100644
--- a/src/overlays/actors/ovl_En_Suttari/z_en_suttari.c
+++ b/src/overlays/actors/ovl_En_Suttari/z_en_suttari.c
@@ -231,7 +231,7 @@ void EnSuttari_TriggerTransition(PlayState* play, u16 entrance) {
 }
 
 void EnSuttari_UpdateTime(void) {
-    gSaveContext.save.time = ((void)0, gSaveContext.save.time) + (u16)REG(15);
+    gSaveContext.save.time = ((void)0, gSaveContext.save.time) + (u16)R_TIME_SPEED;
     gSaveContext.save.time = ((void)0, gSaveContext.save.time) + (u16)((void)0, gSaveContext.save.daySpeed);
 }
 
@@ -1104,7 +1104,7 @@ void func_80BACE4C(EnSuttari* this, PlayState* play) {
 void func_80BACEE0(EnSuttari* this, PlayState* play) {
     ScheduleOutput scheduleOutput;
 
-    this->timePathTimeSpeed = REG(15) + ((void)0, gSaveContext.save.daySpeed);
+    this->timePathTimeSpeed = R_TIME_SPEED + ((void)0, gSaveContext.save.daySpeed);
     if (!Schedule_RunScript(play, D_80BAE820, &scheduleOutput) ||
         ((this->unk428 != scheduleOutput.result) && !func_80BABF64(this, play, &scheduleOutput))) {
         this->actor.flags &= ~ACTOR_FLAG_1;
@@ -1128,7 +1128,7 @@ void func_80BACEE0(EnSuttari* this, PlayState* play) {
 void func_80BAD004(EnSuttari* this, PlayState* play) {
     ScheduleOutput scheduleOutput;
 
-    this->timePathTimeSpeed = REG(15) + ((void)0, gSaveContext.save.daySpeed);
+    this->timePathTimeSpeed = R_TIME_SPEED + ((void)0, gSaveContext.save.daySpeed);
     if (!Schedule_RunScript(play, D_80BAE820, &scheduleOutput) ||
         ((this->unk428 != scheduleOutput.result) && !func_80BABF64(this, play, &scheduleOutput))) {
         this->actor.flags &= ~ACTOR_FLAG_1;
@@ -1255,7 +1255,7 @@ void func_80BAD5F8(EnSuttari* this, PlayState* play) {
         this->animIndex = 2;
         Actor_ChangeAnimationByInfo(&this->skelAnime, sAnimationInfo, this->animIndex);
     }
-    this->timePathTimeSpeed = REG(15) + ((void)0, gSaveContext.save.daySpeed);
+    this->timePathTimeSpeed = R_TIME_SPEED + ((void)0, gSaveContext.save.daySpeed);
     if (!Schedule_RunScript(play, D_80BAE820, &scheduleOutput) ||
         ((this->unk428 != scheduleOutput.result) && !func_80BABF64(this, play, &scheduleOutput))) {
         this->actor.flags &= ~ACTOR_FLAG_1;
@@ -1293,7 +1293,7 @@ void func_80BAD7F8(EnSuttari* this, PlayState* play) {
             this->animIndex = 2;
             Actor_ChangeAnimationByInfo(&this->skelAnime, sAnimationInfo, this->animIndex);
         }
-        this->timePathTimeSpeed = REG(15) + ((void)0, gSaveContext.save.daySpeed);
+        this->timePathTimeSpeed = R_TIME_SPEED + ((void)0, gSaveContext.save.daySpeed);
         if (!Schedule_RunScript(play, D_80BAE820, &scheduleOutput) ||
             ((this->unk428 != scheduleOutput.result) && !func_80BABF64(this, play, &scheduleOutput))) {
             this->actor.flags &= ~ACTOR_FLAG_1;
diff --git a/src/overlays/actors/ovl_En_Tab/z_en_tab.c b/src/overlays/actors/ovl_En_Tab/z_en_tab.c
index ffa557746..fb4370f69 100644
--- a/src/overlays/actors/ovl_En_Tab/z_en_tab.c
+++ b/src/overlays/actors/ovl_En_Tab/z_en_tab.c
@@ -474,7 +474,7 @@ void func_80BE1224(EnTab* this, PlayState* play) {
 void func_80BE127C(EnTab* this, PlayState* play) {
     ScheduleOutput sp18;
 
-    this->unk_31A = REG(15) + ((void)0, gSaveContext.save.daySpeed);
+    this->unk_31A = R_TIME_SPEED + ((void)0, gSaveContext.save.daySpeed);
 
     if (!Schedule_RunScript(play, D_80BE18D0, &sp18) ||
         ((this->unk_1D8 != sp18.result) && !func_80BE1060(this, play, &sp18))) {
diff --git a/src/overlays/actors/ovl_En_Tk/z_en_tk.c b/src/overlays/actors/ovl_En_Tk/z_en_tk.c
index 60c4b4dd0..b7c17a1c8 100644
--- a/src/overlays/actors/ovl_En_Tk/z_en_tk.c
+++ b/src/overlays/actors/ovl_En_Tk/z_en_tk.c
@@ -323,8 +323,8 @@ void func_80AECB6C(EnTk* this, PlayState* play) {
         return;
     }
 
-    if (REG(15) != 0.0f) {
-        this->skelAnime.playSpeed = (f32)func_800FE620(play) / REG(15);
+    if (R_TIME_SPEED != 0.0f) {
+        this->skelAnime.playSpeed = (f32)func_800FE620(play) / R_TIME_SPEED;
     } else {
         this->skelAnime.playSpeed = 0.0f;
     }
@@ -337,14 +337,14 @@ void func_80AECB6C(EnTk* this, PlayState* play) {
         func_80AEC658(&this->skelAnime, this->unk_320, 1.0f, &sp48, &sp44);
     }
 
-    temp2 = REG(15) * sp44;
+    temp2 = R_TIME_SPEED * sp44;
     temp_f0 = temp2;
 
-    this->unk_2DC += (REG(15) * sp44) - temp2;
+    this->unk_2DC += (R_TIME_SPEED * sp44) - temp2;
     temp3 = this->unk_2DC;
     this->timePathTimeSpeed = temp2 + temp3;
     this->unk_2DC -= temp3;
-    this->unk_2E0 += REG(15);
+    this->unk_2E0 += R_TIME_SPEED;
 
     if (Schedule_RunScript(play, D_80AEF800, &sp34)) {
         if ((this->unk_3CC != sp34.result) && !func_80AED354(this, play, &sp34)) {
diff --git a/src/overlays/actors/ovl_En_Weather_Tag/z_en_weather_tag.c b/src/overlays/actors/ovl_En_Weather_Tag/z_en_weather_tag.c
index ec6f12aeb..dc81d94ea 100644
--- a/src/overlays/actors/ovl_En_Weather_Tag/z_en_weather_tag.c
+++ b/src/overlays/actors/ovl_En_Weather_Tag/z_en_weather_tag.c
@@ -486,8 +486,8 @@ void EnWeatherTag_Update(Actor* thisx, PlayState* play) {
         (play->transitionTrigger == TRANS_TRIGGER_OFF) && (ActorCutscene_GetCurrentIndex() == -1) &&
         (play->csCtx.state == 0)) {
 
-        gSaveContext.save.time = ((void)0, gSaveContext.save.time) + (u16)REG(15);
-        if (REG(15) != 0) {
+        gSaveContext.save.time = ((void)0, gSaveContext.save.time) + (u16)R_TIME_SPEED;
+        if (R_TIME_SPEED != 0) {
             gSaveContext.save.time = ((void)0, gSaveContext.save.time) + (u16)((void)0, gSaveContext.save.daySpeed);
         }
     }
diff --git a/src/overlays/actors/ovl_Oceff_Spot/z_oceff_spot.c b/src/overlays/actors/ovl_Oceff_Spot/z_oceff_spot.c
index 7eaf78c20..7dabab2e7 100644
--- a/src/overlays/actors/ovl_Oceff_Spot/z_oceff_spot.c
+++ b/src/overlays/actors/ovl_Oceff_Spot/z_oceff_spot.c
@@ -80,7 +80,7 @@ void OceffSpot_End(OceffSpot* this, PlayState* play) {
         this->unk16C -= 0.05f;
     } else {
         Actor_MarkForDeath(&this->actor);
-        if ((REG(15) != 0x190) && (play->msgCtx.unk12046 == 0)) {
+        if ((R_TIME_SPEED != 400) && (play->msgCtx.unk12046 == 0)) {
             if ((play->msgCtx.ocarinaAction != 0x39) || (play->msgCtx.ocarinaMode != 0xA)) {
                 gSaveContext.sunsSongState = SUNSSONG_START;
             }
diff --git a/tools/disasm/functions.txt b/tools/disasm/functions.txt
index cf2f9676b..e7629ae5c 100644
--- a/tools/disasm/functions.txt
+++ b/tools/disasm/functions.txt
@@ -2124,12 +2124,12 @@
     0x80114FD0:("Inventory_UpdateBottleItem",),
     0x80115130:("Inventory_ConsumeFairy",),
     0x801152B8:("Inventory_UpdateItem",),
-    0x801153C8:("func_801153C8",),
-    0x80115428:("Interface_LoadActionLabel",),
+    0x801153C8:("Interface_MemSetZeroed",),
+    0x80115428:("Interface_LoadAButtonDoActionLabel",),
     0x8011552C:("Interface_SetAButtonDoAction",),
     0x801155B4:("Interface_SetBButtonDoAction",),
     0x80115764:("Interface_SetTatlCall",),
-    0x80115844:("func_80115844",),
+    0x80115844:("Interface_LoadBButtonDoActionLabel",),
     0x80115908:("Health_ChangeBy",),
     0x801159C0:("Health_GiveHearts",),
     0x801159EC:("Rupees_ChangeBy",),
@@ -2141,15 +2141,15 @@
     0x80116114:("Magic_FlashMeterBorder",),
     0x80116348:("Magic_Update",),
     0x80116918:("Magic_DrawMeter",),
-    0x80116FD8:("Interface_SetView1",),
-    0x801170B8:("Interface_SetView2",),
+    0x80116FD8:("Interface_SetPerspectiveView",),
+    0x801170B8:("Interface_SetOrthoView",),
     0x80117100:("Interface_DrawItemButtons",),
     0x80117A20:("Interface_DrawItemIconTexture",),
     0x80117BD0:("Interface_DrawAmmoCount",),
-    0x80118084:("func_80118084",),
-    0x80118890:("func_80118890",),
-    0x80118BA4:("func_80118BA4",),
-    0x80119030:("func_80119030",),
+    0x80118084:("Interface_DrawBButtonIcons",),
+    0x80118890:("Interface_DrawCButtonIcons",),
+    0x80118BA4:("Interface_DrawAButton",),
+    0x80119030:("Interface_DrawPauseMenuEquippingIcons",),
     0x80119610:("Interface_DrawClock",),
     0x8011B4E0:("Interface_SetMinigamePerfect",),
     0x8011B5C0:("Interface_UpdateMinigamePerfectType1",),
diff --git a/tools/disasm/variables.txt b/tools/disasm/variables.txt
index c48de3cc9..a246b56c4 100644
--- a/tools/disasm/variables.txt
+++ b/tools/disasm/variables.txt
@@ -1127,11 +1127,11 @@
     0x801BFB14:("D_801BFB14","UNK_TYPE1","",0x1),
     0x801BFB1C:("D_801BFB1C","UNK_TYPE1","",0x1),
     0x801BFB24:("D_801BFB24","UNK_TYPE1","",0x1),
-    0x801BFB2C:("D_801BFB2C","UNK_TYPE2","",0x2),
+    0x801BFB2C:("sThreeDayClockAlpha","UNK_TYPE2","",0x2),
     0x801BFB30:("D_801BFB30","UNK_TYPE2","",0x2),
     0x801BFB34:("D_801BFB34","UNK_TYPE2","",0x2),
-    0x801BFB38:("D_801BFB38","UNK_TYPE1","",0x1),
-    0x801BFB6C:("D_801BFB6C","UNK_TYPE1","",0x1),
+    0x801BFB38:("sThreeDayClockHours","UNK_TYPE1","",0x1),
+    0x801BFB6C:("sThreeDayClockHourTextures","UNK_TYPE1","",0x1),
     0x801BFBCC:("D_801BFBCC","UNK_TYPE2","",0x2),
     0x801BFBD0:("D_801BFBD0","UNK_TYPE2","",0x2),
     0x801BFBD4:("D_801BFBD4","UNK_TYPE2","",0x2),
@@ -1150,7 +1150,7 @@
     0x801BFC08:("D_801BFC08","UNK_TYPE1","",0x1),
     0x801BFC0C:("D_801BFC0C","UNK_TYPE1","",0x1),
     0x801BFC10:("D_801BFC10","UNK_TYPE1","",0x1),
-    0x801BFC14:("D_801BFC14","UNK_TYPE1","",0x1),
+    0x801BFC14:("sFinalHoursDigitTextures","UNK_TYPE1","",0x1),
     0x801BFC40:("D_801BFC40","UNK_TYPE1","",0x1),
     0x801BFC50:("D_801BFC50","UNK_TYPE2","",0x2),
     0x801BFC60:("sMinigamePerfectType1PrimColorTargets","s16","[6]",0xC),
@@ -1175,8 +1175,8 @@
     0x801BFD6C:("sMinigameCountdownPrimColors","UNK_TYPE2","",0x2),
     0x801BFD84:("gStoryTextures","UNK_TYPE1","",0x1),
     0x801BFD8C:("gStoryTLUTs","UNK_TYPE1","",0x1),
-    0x801BFD94:("D_801BFD94","UNK_TYPE4","",0x4),
-    0x801BFD98:("D_801BFD98","UNK_TYPE4","[2]",0x8),
+    0x801BFD94:("sIsSunsPlayedAtDay","UNK_TYPE4","",0x4),
+    0x801BFD98:("sPrevTimeSpeed","UNK_TYPE4","[2]",0x8),
     0x801BFDA0:("sMaskObjectIds","s16","[24]",0x30),
     0x801BFDD0:("D_801BFDD0","UNK_TYPE1","",0x1),
     0x801BFDE8:("sMaskItemIds","UNK_TYPE1","",0x1),
diff --git a/tools/sizes/code_functions.csv b/tools/sizes/code_functions.csv
index b807a0e24..7426fac19 100644
--- a/tools/sizes/code_functions.csv
+++ b/tools/sizes/code_functions.csv
@@ -1638,12 +1638,12 @@ asm/non_matchings/code/z_parameter/Inventory_HasItemInBottle.s,Inventory_HasItem
 asm/non_matchings/code/z_parameter/Inventory_UpdateBottleItem.s,Inventory_UpdateBottleItem,0x80114FD0,0x58
 asm/non_matchings/code/z_parameter/Inventory_ConsumeFairy.s,Inventory_ConsumeFairy,0x80115130,0x62
 asm/non_matchings/code/z_parameter/Inventory_UpdateItem.s,Inventory_UpdateItem,0x801152B8,0x44
-asm/non_matchings/code/z_parameter/func_801153C8.s,func_801153C8,0x801153C8,0x18
-asm/non_matchings/code/z_parameter/Interface_LoadActionLabel.s,Interface_LoadActionLabel,0x80115428,0x41
+asm/non_matchings/code/z_parameter/Interface_MemSetZeroed.s,Interface_MemSetZeroed,0x801153C8,0x18
+asm/non_matchings/code/z_parameter/Interface_LoadAButtonDoActionLabel.s,Interface_LoadAButtonDoActionLabel,0x80115428,0x41
 asm/non_matchings/code/z_parameter/Interface_SetAButtonDoAction.s,Interface_SetAButtonDoAction,0x8011552C,0x22
 asm/non_matchings/code/z_parameter/Interface_SetBButtonDoAction.s,Interface_SetBButtonDoAction,0x801155B4,0x6C
 asm/non_matchings/code/z_parameter/Interface_SetTatlCall.s,Interface_SetTatlCall,0x80115764,0x38
-asm/non_matchings/code/z_parameter/func_80115844.s,func_80115844,0x80115844,0x31
+asm/non_matchings/code/z_parameter/Interface_LoadBButtonDoActionLabel.s,Interface_LoadBButtonDoActionLabel,0x80115844,0x31
 asm/non_matchings/code/z_parameter/Health_ChangeBy.s,Health_ChangeBy,0x80115908,0x2E
 asm/non_matchings/code/z_parameter/Health_GiveHearts.s,Health_GiveHearts,0x801159C0,0xB
 asm/non_matchings/code/z_parameter/Rupees_ChangeBy.s,Rupees_ChangeBy,0x801159EC,0xA
@@ -1655,15 +1655,15 @@ asm/non_matchings/code/z_parameter/Magic_UpdateAddRequest.s,Magic_UpdateAddReque
 asm/non_matchings/code/z_parameter/Magic_FlashMeterBorder.s,Magic_FlashMeterBorder,0x80116114,0x8D
 asm/non_matchings/code/z_parameter/Magic_Update.s,Magic_Update,0x80116348,0x174
 asm/non_matchings/code/z_parameter/Magic_DrawMeter.s,Magic_DrawMeter,0x80116918,0x1B0
-asm/non_matchings/code/z_parameter/Interface_SetView1.s,Interface_SetView1,0x80116FD8,0x38
-asm/non_matchings/code/z_parameter/Interface_SetView2.s,Interface_SetView2,0x801170B8,0x12
+asm/non_matchings/code/z_parameter/Interface_SetPerspectiveView.s,Interface_SetPerspectiveView,0x80116FD8,0x38
+asm/non_matchings/code/z_parameter/Interface_SetOrthoView.s,Interface_SetOrthoView,0x801170B8,0x12
 asm/non_matchings/code/z_parameter/Interface_DrawItemButtons.s,Interface_DrawItemButtons,0x80117100,0x248
 asm/non_matchings/code/z_parameter/Interface_DrawItemIconTexture.s,Interface_DrawItemIconTexture,0x80117A20,0x6C
 asm/non_matchings/code/z_parameter/Interface_DrawAmmoCount.s,Interface_DrawAmmoCount,0x80117BD0,0x12D
-asm/non_matchings/code/z_parameter/func_80118084.s,func_80118084,0x80118084,0x203
-asm/non_matchings/code/z_parameter/func_80118890.s,func_80118890,0x80118890,0xC5
-asm/non_matchings/code/z_parameter/func_80118BA4.s,func_80118BA4,0x80118BA4,0x123
-asm/non_matchings/code/z_parameter/func_80119030.s,func_80119030,0x80119030,0x178
+asm/non_matchings/code/z_parameter/Interface_DrawBButtonIcons.s,Interface_DrawBButtonIcons,0x80118084,0x203
+asm/non_matchings/code/z_parameter/Interface_DrawCButtonIcons.s,Interface_DrawCButtonIcons,0x80118890,0xC5
+asm/non_matchings/code/z_parameter/Interface_DrawAButton.s,Interface_DrawAButton,0x80118BA4,0x123
+asm/non_matchings/code/z_parameter/Interface_DrawPauseMenuEquippingIcons.s,Interface_DrawPauseMenuEquippingIcons,0x80119030,0x178
 asm/non_matchings/code/z_parameter/Interface_DrawClock.s,Interface_DrawClock,0x80119610,0x7B4
 asm/non_matchings/code/z_parameter/Interface_SetMinigamePerfect.s,Interface_SetMinigamePerfect,0x8011B4E0,0x38
 asm/non_matchings/code/z_parameter/Interface_UpdateMinigamePerfectType1.s,Interface_UpdateMinigamePerfectType1,0x8011B5C0,0x108