diff --git a/constants/map_data_constants.asm b/constants/map_data_constants.asm
index 908a659c9..5faa12864 100644
--- a/constants/map_data_constants.asm
+++ b/constants/map_data_constants.asm
@@ -35,9 +35,12 @@ DEF NUM_ENVIRONMENTS EQU const_value - 1
 	const PALETTE_DAY
 	const PALETTE_NITE
 	const PALETTE_MORN
-	const PALETTE_DARK
+	const PALETTE_EVE
 DEF NUM_MAP_PALETTES EQU const_value
 
+IN_DARKNESS_F EQU 3
+IN_DARKNESS   EQU 1 << IN_DARKNESS_F ; masked with a PALETTE_* constant
+
 ; FishGroups indexes (see data/wild/fish.asm)
 	const_def
 	const FISHGROUP_NONE
diff --git a/constants/pokemon_data_constants.asm b/constants/pokemon_data_constants.asm
index 7294a440f..c1d557ba5 100644
--- a/constants/pokemon_data_constants.asm
+++ b/constants/pokemon_data_constants.asm
@@ -159,7 +159,7 @@ DEF NUM_HOF_TEAMS EQU 30
 	const_def 1
 	const TR_ANYTIME
 	const TR_MORNDAY
-	const TR_NITE
+	const TR_EVENITE
 
 ; EVOLVE_STAT triggers
 	const_def 1
@@ -172,7 +172,7 @@ DEF NUM_HOF_TEAMS EQU 30
 DEF NUM_GRASSMON EQU 7 ; data/wild/*_grass.asm table size
 DEF NUM_WATERMON EQU 3 ; data/wild/*_water.asm table size
 
-DEF GRASS_WILDDATA_LENGTH EQU 2 + 3 + NUM_GRASSMON * 2 * 3
+DEF GRASS_WILDDATA_LENGTH EQU 2 + NUM_DAYTIMES + NUM_GRASSMON * 2 * NUM_DAYTIMES
 DEF WATER_WILDDATA_LENGTH EQU 2 + 1 + NUM_WATERMON * 2
 DEF FISHGROUP_DATA_LENGTH EQU 1 + 2 * 3
 
diff --git a/constants/wram_constants.asm b/constants/wram_constants.asm
index 9a80a8c9d..edd5e5e10 100644
--- a/constants/wram_constants.asm
+++ b/constants/wram_constants.asm
@@ -118,18 +118,19 @@ DEF INIT_MON_LIST        EQU 5
 	const MORN_F     ; 0
 	const DAY_F      ; 1
 	const NITE_F     ; 2
-	const DARKNESS_F ; 3
+	const EVE_F      ; 3
 DEF NUM_DAYTIMES EQU const_value
 
 DEF MORN     EQU 1 << MORN_F
 DEF DAY      EQU 1 << DAY_F
 DEF NITE     EQU 1 << NITE_F
-DEF DARKNESS EQU 1 << DARKNESS_F
+DEF EVE      EQU 1 << EVE_F
 
-DEF ANYTIME EQU MORN | DAY | NITE
+DEF ANYTIME EQU MORN | DAY | NITE | EVE
 
 ; wTimeOfDayPalset::
-DEF DARKNESS_PALSET EQU (DARKNESS_F << 6) | (DARKNESS_F << 4) | (DARKNESS_F << 2) | DARKNESS_F
+; Must be different from any in ReplaceTimeOfDayPals.BrightnessLevels
+DEF DARKNESS_PALSET EQU $80
 
 ; wBattleAnimFlags::
 	const_def
diff --git a/data/maps/environment_colors.asm b/data/maps/environment_colors.asm
index 99e9be734..e11f3bd8c 100644
--- a/data/maps/environment_colors.asm
+++ b/data/maps/environment_colors.asm
@@ -11,27 +11,27 @@ EnvironmentColorsPointers:
 	dw .DungeonColors ; DUNGEON
 	assert_table_length NUM_ENVIRONMENTS + 1
 
-; Valid indices: $00 - $29 (see gfx/tilesets/bg_tiles.pal)
+; Valid indices: $00 - $2b (see gfx/tilesets/bg_tiles.pal)
 .OutdoorColors:
 	db $00, $01, $02, $28, $04, $05, $06, $07 ; morn
-	db $08, $09, $0a, $28, $0c, $0d, $0e, $0f ; day
-	db $10, $11, $12, $29, $14, $15, $16, $17 ; nite
-	db $18, $19, $1a, $1b, $1c, $1d, $1e, $1f ; dark
+	db $08, $09, $0a, $29, $0c, $0d, $0e, $0f ; day
+	db $10, $11, $12, $2a, $14, $15, $16, $17 ; nite
+	db $18, $19, $1a, $2b, $1c, $1d, $1e, $1f ; eve
 
 .IndoorColors:
 	db $20, $21, $22, $23, $24, $25, $26, $07 ; morn
 	db $20, $21, $22, $23, $24, $25, $26, $07 ; day
 	db $10, $11, $12, $13, $14, $15, $16, $07 ; nite
-	db $18, $19, $1a, $1b, $1c, $1d, $1e, $07 ; dark
+	db $18, $19, $1a, $1b, $1c, $1d, $1e, $07 ; eve
 
 .DungeonColors:
 	db $00, $01, $02, $03, $04, $05, $06, $07 ; morn
 	db $08, $09, $0a, $0b, $0c, $0d, $0e, $0f ; day
 	db $10, $11, $12, $13, $14, $15, $16, $17 ; nite
-	db $18, $19, $1a, $1b, $1c, $1d, $1e, $1f ; dark
+	db $18, $19, $1a, $1b, $1c, $1d, $1e, $1f ; eve
 
 .Env5Colors:
 	db $00, $01, $02, $03, $04, $05, $06, $07 ; morn
 	db $08, $09, $0a, $0b, $0c, $0d, $0e, $0f ; day
 	db $10, $11, $12, $13, $14, $15, $16, $17 ; nite
-	db $18, $19, $1a, $1b, $1c, $1d, $1e, $1f ; dark
+	db $18, $19, $1a, $1b, $1c, $1d, $1e, $1f ; eve
diff --git a/data/pokemon/evos_attacks.asm b/data/pokemon/evos_attacks.asm
index 54a0689d1..b3700999f 100644
--- a/data/pokemon/evos_attacks.asm
+++ b/data/pokemon/evos_attacks.asm
@@ -1796,7 +1796,7 @@ EeveeEvosAttacks:
 	db EVOLVE_ITEM, WATER_STONE, VAPOREON
 	db EVOLVE_ITEM, FIRE_STONE, FLAREON
 	db EVOLVE_HAPPINESS, TR_MORNDAY, ESPEON
-	db EVOLVE_HAPPINESS, TR_NITE, UMBREON
+	db EVOLVE_HAPPINESS, TR_EVENITE, UMBREON
 	db 0 ; no more evolutions
 	db 1, TACKLE
 	db 1, TAIL_WHIP
diff --git a/data/text/std_text.asm b/data/text/std_text.asm
index 5415c4876..b06320d85 100644
--- a/data/text/std_text.asm
+++ b/data/text/std_text.asm
@@ -10,6 +10,12 @@ NurseDayText:
 	cont "#MON CENTER."
 	done
 
+NurseEveText:
+	text "Good evening!"
+	line "Welcome to our"
+	cont "#MON CENTER."
+	done
+
 NurseNiteText:
 	text "Good evening!"
 	line "You're out late."
diff --git a/data/wild/fish.asm b/data/wild/fish.asm
index 3833c4fe5..9d2f48158 100644
--- a/data/wild/fish.asm
+++ b/data/wild/fish.asm
@@ -208,7 +208,7 @@ FishGroups:
 	db 100 percent,     REMORAID,   40
 
 TimeFishGroups:
-	;  day              nite
+	;  morn/day         eve/nite
 	db CORSOLA,    20,  STARYU,     20 ; 0
 	db CORSOLA,    40,  STARYU,     40 ; 1
 	db SHELLDER,   20,  SHELLDER,   20 ; 2
diff --git a/data/wild/johto_grass.asm b/data/wild/johto_grass.asm
index d1ceaa65f..14d5a3c74 100644
--- a/data/wild/johto_grass.asm
+++ b/data/wild/johto_grass.asm
@@ -3,7 +3,7 @@
 JohtoGrassWildMons:
 
 	def_grass_wildmons N_A
-	db 2 percent, 2 percent, 2 percent ; encounter rates: morn/day/nite
+	db 2 percent, 2 percent, 2 percent, 2 percent ; encounter rates: morn/day/nite/eve
 	; morn
 	db 3, RATTATA
 	db 4, RATTATA
@@ -28,6 +28,14 @@ JohtoGrassWildMons:
 	db 6, GASTLY
 	db 5, RATTATA
 	db 5, RATTATA
+	; eve
+	db 3, RATTATA
+	db 4, GASTLY
+	db 5, RATTATA
+	db 3, RATTATA
+	db 6, GASTLY
+	db 5, RATTATA
+	db 5, RATTATA
 	end_grass_wildmons
 
 	db -1 ; end
diff --git a/data/wild/kanto_grass.asm b/data/wild/kanto_grass.asm
index e833628bb..d03bd1524 100644
--- a/data/wild/kanto_grass.asm
+++ b/data/wild/kanto_grass.asm
@@ -3,7 +3,7 @@
 KantoGrassWildMons:
 
 	def_grass_wildmons N_A
-	db 4 percent, 2 percent, 8 percent ; encounter rates: morn/day/nite
+	db 4 percent, 2 percent, 8 percent, 4 percent ; encounter rates: morn/day/nite/eve
 	; morn
 	db 3, DIGLETT
 	db 6, DIGLETT
@@ -28,6 +28,14 @@ KantoGrassWildMons:
 	db 32, DUGTRIO
 	db 32, DUGTRIO
 	db 32, DUGTRIO
+	; eve
+	db 3, DIGLETT
+	db 6, DIGLETT
+	db 12, DIGLETT
+	db 24, DIGLETT
+	db 24, DUGTRIO
+	db 24, DUGTRIO
+	db 24, DUGTRIO
 	end_grass_wildmons
 
 	db -1 ; end
diff --git a/data/wild/swarm_grass.asm b/data/wild/swarm_grass.asm
index f0b070c42..2248a650f 100644
--- a/data/wild/swarm_grass.asm
+++ b/data/wild/swarm_grass.asm
@@ -4,7 +4,7 @@ SwarmGrassWildMons:
 
 ; Dunsparce swarm
 	map_id N_A
-	db 4 percent, 4 percent, 4 percent ; encounter rates: morn/day/nite
+	db 4 percent, 4 percent, 4 percent, 4 percent ; encounter rates: morn/day/nite/eve
 	; morn
 	db 3, GEODUDE
 	db 3, DUNSPARCE
@@ -29,5 +29,13 @@ SwarmGrassWildMons:
 	db 2, DUNSPARCE
 	db 4, DUNSPARCE
 	db 4, DUNSPARCE
+	; eve
+	db 3, GEODUDE
+	db 3, DUNSPARCE
+	db 2, ZUBAT
+	db 2, GEODUDE
+	db 2, DUNSPARCE
+	db 4, DUNSPARCE
+	db 4, DUNSPARCE
 
 	db -1 ; end
diff --git a/engine/battle/battle_transition.asm b/engine/battle/battle_transition.asm
index d0bc72b67..7d145796b 100644
--- a/engine/battle/battle_transition.asm
+++ b/engine/battle/battle_transition.asm
@@ -637,9 +637,8 @@ StartTrainerBattle_LoadPokeBallGraphics:
 	jr nz, .tile_loop
 
 	ld hl, .pals
-	ld a, [wTimeOfDayPal]
-	maskbits NUM_DAYTIMES
-	cp DARKNESS_F
+	ld a, [wTimeOfDayPalset]
+	cp DARKNESS_PALSET
 	jr nz, .not_dark
 	ld hl, .darkpals
 .not_dark
diff --git a/engine/battle/start_battle.asm b/engine/battle/start_battle.asm
index 8495666a8..42b8cde4e 100644
--- a/engine/battle/start_battle.asm
+++ b/engine/battle/start_battle.asm
@@ -73,7 +73,7 @@ PlayBattleMusic:
 	ld de, MUSIC_JOHTO_WILD_BATTLE
 	ld a, [wTimeOfDay]
 	cp NITE_F
-	jr nz, .done
+	jr c, .done ; not NITE_F or EVE_F
 	ld de, MUSIC_JOHTO_WILD_BATTLE_NIGHT
 	jr .done
 
diff --git a/engine/events/checktime.asm b/engine/events/checktime.asm
index 6e470e883..cf12074af 100644
--- a/engine/events/checktime.asm
+++ b/engine/events/checktime.asm
@@ -15,5 +15,5 @@ CheckTime::
 	db MORN_F, MORN
 	db DAY_F,  DAY
 	db NITE_F, NITE
-	db NITE_F, NITE
+	db EVE_F,  EVE
 	db -1
diff --git a/engine/events/poke_seer.asm b/engine/events/poke_seer.asm
index 9ad8d71dd..c5c2b6958 100644
--- a/engine/events/poke_seer.asm
+++ b/engine/events/poke_seer.asm
@@ -181,11 +181,10 @@ GetCaughtLevel:
 GetCaughtTime:
 	ld a, [wSeerCaughtData]
 	and CAUGHT_TIME_MASK
-	jr z, .none
-
 	rlca
 	rlca
 	dec a
+	maskbits NUM_DAYTIMES
 	ld hl, .times
 	call GetNthString
 	ld d, h
@@ -195,15 +194,11 @@ GetCaughtTime:
 	and a
 	ret
 
-.none
-	ld de, wSeerTimeOfDay
-	call UnknownCaughtData
-	ret
-
 .times
 	db "Morning@"
 	db "Day@"
 	db "Night@"
+	db "Evening@"
 
 UnknownCaughtData:
 	ld hl, .unknown
diff --git a/engine/events/std_scripts.asm b/engine/events/std_scripts.asm
index beb6eba36..1b26c899c 100644
--- a/engine/events/std_scripts.asm
+++ b/engine/events/std_scripts.asm
@@ -63,6 +63,8 @@ PokecenterNurseScript:
 	iftrue .morn
 	checktime DAY
 	iftrue .day
+	checktime EVE
+	iftrue .eve
 	checktime NITE
 	iftrue .nite
 	sjump .ok
@@ -77,6 +79,11 @@ PokecenterNurseScript:
 	promptbutton
 	sjump .ok
 
+.eve
+	farwritetext NurseEveText
+	promptbutton
+	sjump .ok
+
 .nite
 	farwritetext NurseNiteText
 	promptbutton
diff --git a/engine/gfx/color.asm b/engine/gfx/color.asm
index 7b3a347ec..9e9ba3738 100644
--- a/engine/gfx/color.asm
+++ b/engine/gfx/color.asm
@@ -628,7 +628,7 @@ INCLUDE "data/pokemon/palettes.asm"
 INCLUDE "data/trainers/palettes.asm"
 
 LoadMapPals:
-	farcall LoadSpecialMapPalette
+	farcall LoadSpecialMapPalette ; also handles darkness palettes
 	jr c, .got_pals
 
 	; Which palette group is based on whether we're outside or inside
@@ -688,6 +688,20 @@ LoadMapPals:
 	ldh [rSVBK], a
 
 .got_pals
+	; BG pals done. Now do OBJ pals.
+	call GetMapTimeOfDay
+	bit IN_DARKNESS_F, a
+	jr z, .not_darkness
+	ld a, [wStatusFlags]
+	bit STATUSFLAGS_FLASH_F, a
+	jr nz, .not_darkness
+	ld a, BANK(wOBPals1)
+	ld de, wOBPals1
+	ld hl, NPCDarknessPalette
+	ld bc, 8 palettes
+	jp FarCopyWRAM
+
+.not_darkness
 	ld a, [wTimeOfDayPal]
 	maskbits NUM_DAYTIMES
 	ld bc, 8 palettes
@@ -705,21 +719,21 @@ LoadMapPals:
 	ret nz
 .outside
 	ld a, [wMapGroup]
-	ld l, a
-	ld h, 0
-	add hl, hl
-	add hl, hl
-	add hl, hl
-	ld de, RoofPals
+	add a
+	add a
+	ld e, a
+	ld d, 0
+	ld hl, RoofPals
+rept NUM_DAYTIMES
 	add hl, de
+endr
 	ld a, [wTimeOfDayPal]
 	maskbits NUM_DAYTIMES
-	cp NITE_F
-	jr c, .morn_day
-rept 4
-	inc hl
-endr
-.morn_day
+	add a
+	add a
+	ld e, a
+	ld d, 0
+	add hl, de
 	ld de, wBGPals1 palette PAL_BG_ROOF color 1
 	ld bc, 4
 	ld a, BANK(wBGPals1)
@@ -737,11 +751,14 @@ INCLUDE "gfx/stats/party_menu_bg.pal"
 TilesetBGPalette:
 INCLUDE "gfx/tilesets/bg_tiles.pal"
 
+NPCDarknessPalette:
+INCLUDE "gfx/overworld/npc_sprites_darkness.pal"
+
 MapObjectPals::
 INCLUDE "gfx/overworld/npc_sprites.pal"
 
 RoofPals:
-	table_width PAL_COLOR_SIZE * 2 * 2, RoofPals
+	table_width PAL_COLOR_SIZE * 4 * 2, RoofPals
 INCLUDE "gfx/tilesets/roofs.pal"
 	assert_table_length NUM_MAP_GROUPS + 1
 
diff --git a/engine/menus/main_menu.asm b/engine/menus/main_menu.asm
index bfb3b564d..5a207fb98 100644
--- a/engine/menus/main_menu.asm
+++ b/engine/menus/main_menu.asm
@@ -204,7 +204,7 @@ MainMenu_PrintCurrentTimeAndDay:
 	db "MORN@"
 	db "DAY@"
 	db "NITE@"
-	db "NITE@"
+	db "EVE@"
 
 ClearTilemapEtc:
 	xor a
diff --git a/engine/overworld/wildmons.asm b/engine/overworld/wildmons.asm
index cc295e41c..0e7b9c957 100644
--- a/engine/overworld/wildmons.asm
+++ b/engine/overworld/wildmons.asm
@@ -5,6 +5,7 @@ LoadWildMonData:
 	xor a
 	ld [hli], a
 	ld [hli], a
+	ld [hli], a
 	ld [hl], a
 	jr .done_copy
 
@@ -12,7 +13,7 @@ LoadWildMonData:
 	inc hl
 	inc hl
 	ld de, wMornEncounterRate
-	ld bc, 3
+	ld bc, NUM_DAYTIMES
 	call CopyBytes
 .done_copy
 	call _WaterWildmonLookup
diff --git a/engine/pokegear/radio.asm b/engine/pokegear/radio.asm
index af3a1f168..8c2c38739 100644
--- a/engine/pokegear/radio.asm
+++ b/engine/pokegear/radio.asm
@@ -231,12 +231,10 @@ OaksPKMNTalk4:
 rept 4
 	inc hl
 endr
-	; Generate a number, either 0, 1, or 2, to choose a time of day.
+	; Generate a number, either 0, 1, 2, or 3 to choose a time of day.
 .loop2
 	call Random
 	maskbits NUM_DAYTIMES
-	cp DARKNESS_F
-	jr z, .loop2
 
 	ld bc, 2 * NUM_GRASSMON
 	call AddNTimes
diff --git a/engine/pokemon/caught_data.asm b/engine/pokemon/caught_data.asm
index 930f2e849..54471e1b6 100644
--- a/engine/pokemon/caught_data.asm
+++ b/engine/pokemon/caught_data.asm
@@ -166,6 +166,7 @@ SetBoxmonOrEggmonCaughtData:
 	inc a
 	rrca
 	rrca
+	and CAUGHT_TIME_MASK ; caught in eve becomes $0
 	ld b, a
 	ld a, [wCurPartyLevel]
 	or b
diff --git a/engine/pokemon/evolve.asm b/engine/pokemon/evolve.asm
index b3a620c05..3f457b97e 100644
--- a/engine/pokemon/evolve.asm
+++ b/engine/pokemon/evolve.asm
@@ -129,16 +129,16 @@ EvolveAfterBattle_MasterLoop:
 	cp TR_MORNDAY
 	jr z, .happiness_daylight
 
-; TR_NITE
+; TR_EVENITE
 	ld a, [wTimeOfDay]
 	cp NITE_F
-	jp nz, .dont_evolve_3
+	jp c, .dont_evolve_3 ; MORN_F or DAY_F
 	jr .proceed
 
 .happiness_daylight
 	ld a, [wTimeOfDay]
 	cp NITE_F
-	jp z, .dont_evolve_3
+	jp nc, .dont_evolve_3 ; NITE_F or EVE_F
 	jr .proceed
 
 .trade
diff --git a/engine/tilesets/tileset_palettes.asm b/engine/tilesets/tileset_palettes.asm
index 994102238..061a57b2d 100644
--- a/engine/tilesets/tileset_palettes.asm
+++ b/engine/tilesets/tileset_palettes.asm
@@ -1,4 +1,12 @@
 LoadSpecialMapPalette:
+	call GetMapTimeOfDay
+	bit IN_DARKNESS_F, a
+	jr z, .not_dark
+	ld a, [wStatusFlags]
+	bit STATUSFLAGS_FLASH_F, a
+	jr z, .darkness
+
+.not_dark
 	ld a, [wMapTileset]
 	cp TILESET_POKECOM_CENTER
 	jr z, .pokecom_2f
@@ -14,6 +22,11 @@ LoadSpecialMapPalette:
 	jr z, .mansion_mobile
 	jr .do_nothing
 
+.darkness
+	call LoadDarknessPalette
+	scf
+	ret
+
 .pokecom_2f
 	call LoadPokeComPalette
 	scf
@@ -52,6 +65,16 @@ LoadSpecialMapPalette:
 	and a
 	ret
 
+LoadDarknessPalette:
+	ld a, BANK(wBGPals1)
+	ld de, wBGPals1
+	ld hl, DarknessPalette
+	ld bc, 8 palettes
+	jp FarCopyWRAM
+
+DarknessPalette:
+INCLUDE "gfx/tilesets/bg_tiles_darkness.pal"
+
 LoadPokeComPalette:
 	ld a, BANK(wBGPals1)
 	ld de, wBGPals1
diff --git a/engine/tilesets/timeofday_pals.asm b/engine/tilesets/timeofday_pals.asm
index 1dc7165f1..154a04e7d 100644
--- a/engine/tilesets/timeofday_pals.asm
+++ b/engine/tilesets/timeofday_pals.asm
@@ -185,10 +185,18 @@ endr
 	ret
 
 ReplaceTimeOfDayPals:
+	ld a, [wMapTimeOfDay]
+	bit IN_DARKNESS_F, a
+	jr z, .not_dark
+	ld a, [wStatusFlags]
+	bit STATUSFLAGS_FLASH_F, a
+	jr nz, .not_dark
+	ld a, DARKNESS_PALSET
+	jr .done
+
+.not_dark:
 	ld hl, .BrightnessLevels
 	ld a, [wMapTimeOfDay]
-	cp PALETTE_DARK
-	jr z, .NeedsFlash
 	maskbits NUM_MAP_PALETTES
 	add l
 	ld l, a
@@ -196,33 +204,21 @@ ReplaceTimeOfDayPals:
 	adc h
 	ld h, a
 	ld a, [hl]
-	ld [wTimeOfDayPalset], a
-	ret
-
-.NeedsFlash:
-	ld a, [wStatusFlags]
-	bit STATUSFLAGS_FLASH_F, a
-	jr nz, .UsedFlash
-	ld a, DARKNESS_PALSET
-	ld [wTimeOfDayPalset], a
-	ret
-
-.UsedFlash:
-	ld a, (NITE_F << 6) | (NITE_F << 4) | (NITE_F << 2) | NITE_F
+.done
 	ld [wTimeOfDayPalset], a
 	ret
 
 .BrightnessLevels:
 ; actual palettes used when time is
-; DARKNESS_F, NITE_F, DAY_F, MORN_F
-	dc DARKNESS_F, NITE_F,     DAY_F,      MORN_F     ; PALETTE_AUTO
+; EVE_F, NITE_F, DAY_F, MORN_F
+	dc EVE_F,      NITE_F,     DAY_F,      MORN_F     ; PALETTE_AUTO
 	dc DAY_F,      DAY_F,      DAY_F,      DAY_F      ; PALETTE_DAY
 	dc NITE_F,     NITE_F,     NITE_F,     NITE_F     ; PALETTE_NITE
 	dc MORN_F,     MORN_F,     MORN_F,     MORN_F     ; PALETTE_MORN
-	dc DARKNESS_F, DARKNESS_F, DARKNESS_F, DARKNESS_F ; PALETTE_DARK
-	dc DARKNESS_F, NITE_F,     DAY_F,      MORN_F
-	dc DARKNESS_F, NITE_F,     DAY_F,      MORN_F
-	dc DARKNESS_F, NITE_F,     DAY_F,      MORN_F
+	dc EVE_F,      EVE_F,      EVE_F,      EVE_F      ; PALETTE_EVE
+	dc EVE_F,      NITE_F,     DAY_F,      MORN_F
+	dc EVE_F,      NITE_F,     DAY_F,      MORN_F
+	dc EVE_F,      NITE_F,     DAY_F,      MORN_F
 
 GetTimePalette:
 	jumptable .TimePalettes, wTimeOfDay
@@ -231,7 +227,7 @@ GetTimePalette:
 	dw .MorningPalette  ; MORN_F
 	dw .DayPalette      ; DAY_F
 	dw .NitePalette     ; NITE_F
-	dw .DarknessPalette ; DARKNESS_F
+	dw .EveningPalette  ; EVE_F
 
 .MorningPalette:
 	ld a, [wTimeOfDayPalset]
@@ -251,7 +247,7 @@ GetTimePalette:
 	swap a
 	ret
 
-.DarknessPalette:
+.EveningPalette:
 	ld a, [wTimeOfDayPalset]
 	and %11000000
 	rlca
diff --git a/gfx/overworld/npc_sprites.pal b/gfx/overworld/npc_sprites.pal
index b0f33479a..14c9382cd 100644
--- a/gfx/overworld/npc_sprites.pal
+++ b/gfx/overworld/npc_sprites.pal
@@ -28,12 +28,12 @@
 	RGB 15,14,24, 08,13,19, 00,11,13, 00,00,00 ; tree
 	RGB 15,14,24, 12,09,15, 08,04,05, 00,00,00 ; rock
 
-; dark
-	RGB 01,01,02, 31,19,10, 31,07,01, 00,00,00 ; red
-	RGB 01,01,02, 31,19,10, 10,09,31, 00,00,00 ; blue
-	RGB 01,01,02, 31,19,10, 07,23,03, 00,00,00 ; green
-	RGB 01,01,02, 31,19,10, 15,10,03, 00,00,00 ; brown
-	RGB 01,01,02, 31,19,10, 30,10,06, 00,00,00 ; pink
+; eve
+	RGB 31,21,14, 31,19,10, 31,07,01, 00,00,00 ; red
+	RGB 31,21,14, 31,19,10, 10,09,31, 00,00,00 ; blue
+	RGB 31,21,14, 31,19,10, 07,23,03, 00,00,00 ; green
+	RGB 31,21,14, 31,19,10, 15,10,03, 00,00,00 ; brown
+	RGB 31,21,14, 31,19,10, 30,10,06, 00,00,00 ; pink
 	RGB 31,31,31, 31,31,31, 13,13,13, 00,00,00 ; silver
-	RGB 01,01,02, 00,00,00, 00,00,00, 00,00,00 ; tree
-	RGB 01,01,02, 00,00,00, 00,00,00, 00,00,00 ; rock
+	RGB 19,23,08, 10,19,01, 04,10,00, 06,05,05 ; tree
+	RGB 31,21,14, 21,13,05, 16,09,01, 06,05,05 ; rock
diff --git a/gfx/overworld/npc_sprites_darkness.pal b/gfx/overworld/npc_sprites_darkness.pal
new file mode 100755
index 000000000..8c3959e6a
--- /dev/null
+++ b/gfx/overworld/npc_sprites_darkness.pal
@@ -0,0 +1,9 @@
+; dark
+	RGB 01,01,02, 31,19,10, 31,07,01, 00,00,00 ; red
+	RGB 01,01,02, 31,19,10, 10,09,31, 00,00,00 ; blue
+	RGB 01,01,02, 31,19,10, 07,23,03, 00,00,00 ; green
+	RGB 01,01,02, 31,19,10, 15,10,03, 00,00,00 ; brown
+	RGB 01,01,02, 31,19,10, 30,10,06, 00,00,00 ; pink
+	RGB 31,31,31, 31,31,31, 13,13,13, 00,00,00 ; silver
+	RGB 01,01,02, 00,00,00, 00,00,00, 00,00,00 ; tree
+	RGB 01,01,02, 00,00,00, 00,00,00, 00,00,00 ; rock
diff --git a/gfx/tilesets/bg_tiles.pal b/gfx/tilesets/bg_tiles.pal
index 3605e2184..85e8b0dd4 100644
--- a/gfx/tilesets/bg_tiles.pal
+++ b/gfx/tilesets/bg_tiles.pal
@@ -28,17 +28,17 @@
 	RGB 15,14,24, 13,12,23, 11,09,20, 00,00,00 ; roof
 	RGB 31,31,16, 31,31,16, 14,09,00, 00,00,00 ; text
 
-; dark
-	RGB 01,01,02, 00,00,00, 00,00,00, 00,00,00 ; gray
-	RGB 01,01,02, 00,00,00, 00,00,00, 00,00,00 ; red
-	RGB 01,01,02, 00,00,00, 00,00,00, 00,00,00 ; green
-	RGB 01,01,02, 00,00,00, 00,00,00, 00,00,00 ; water
-	RGB 30,30,11, 00,00,00, 00,00,00, 00,00,00 ; yellow
-	RGB 01,01,02, 00,00,00, 00,00,00, 00,00,00 ; brown
-	RGB 01,01,02, 00,00,00, 00,00,00, 00,00,00 ; roof
+; eve
+	RGB 31,21,14, 18,16,16, 11,10,10, 06,05,05 ; gray
+	RGB 31,21,14, 25,14,18, 24,08,05, 06,05,05 ; red
+	RGB 19,23,08, 10,19,01, 04,10,00, 06,05,05 ; green
+	RGB 31,21,14, 07,09,23, 01,03,23, 06,05,05 ; water
+	RGB 31,31,07, 27,21,10, 25,12,01, 06,05,05 ; yellow
+	RGB 31,21,14, 21,13,05, 16,09,01, 06,05,05 ; brown
+	RGB 31,21,14, 13,23,23, 04,13,23, 06,05,05 ; roof
 	RGB 31,31,16, 31,31,16, 14,09,00, 00,00,00 ; text
 
-; indoor
+; indoor (morn/day)
 	RGB 30,28,26, 19,19,19, 13,13,13, 07,07,07 ; gray
 	RGB 30,28,26, 31,19,24, 30,10,06, 07,07,07 ; red
 	RGB 18,24,09, 15,20,01, 09,13,00, 07,07,07 ; green
@@ -48,6 +48,8 @@
 	RGB 30,28,26, 17,19,31, 14,16,31, 07,07,07 ; roof
 	RGB 31,31,16, 31,31,16, 14,09,00, 00,00,00 ; text
 
-; overworld water
-	RGB 23,23,31, 18,19,31, 13,12,31, 07,07,07 ; morn/day
-	RGB 15,13,27, 10,09,20, 04,03,18, 00,00,00 ; nite
+; overworld water (outdoor)
+	RGB 23,23,31, 18,19,31, 13,12,31, 07,07,07 ; morn
+	RGB 23,23,31, 18,19,31, 13,12,31, 07,07,07 ; day
+ 	RGB 15,13,27, 10,09,20, 04,03,18, 00,00,00 ; nite
+	RGB 31,21,14, 16,14,23, 11,09,23, 06,05,05 ; eve
diff --git a/gfx/tilesets/bg_tiles_darkness.pal b/gfx/tilesets/bg_tiles_darkness.pal
new file mode 100755
index 000000000..0db5d2309
--- /dev/null
+++ b/gfx/tilesets/bg_tiles_darkness.pal
@@ -0,0 +1,9 @@
+; dark
+	RGB 01,01,02, 00,00,00, 00,00,00, 00,00,00 ; gray
+	RGB 01,01,02, 00,00,00, 00,00,00, 00,00,00 ; red
+	RGB 01,01,02, 00,00,00, 00,00,00, 00,00,00 ; green
+	RGB 01,01,02, 00,00,00, 00,00,00, 00,00,00 ; water
+	RGB 30,30,11, 00,00,00, 00,00,00, 00,00,00 ; yellow
+	RGB 01,01,02, 00,00,00, 00,00,00, 00,00,00 ; brown
+	RGB 01,01,02, 00,00,00, 00,00,00, 00,00,00 ; roof
+	RGB 31,31,16, 31,31,16, 14,09,00, 00,00,00 ; text
diff --git a/gfx/tilesets/roofs.pal b/gfx/tilesets/roofs.pal
index 1e3d19e52..dfe559ba3 100644
--- a/gfx/tilesets/roofs.pal
+++ b/gfx/tilesets/roofs.pal
@@ -1,107 +1,161 @@
 ; group 0 (unused)
-	RGB 21,21,21, 11,11,11 ; morn/day
+	RGB 21,21,21, 11,11,11 ; morn
+	RGB 21,21,21, 11,11,11 ; day
 	RGB 21,21,21, 11,11,11 ; nite
+	RGB 18,16,16, 09,08,08 ; eve
 
 ; group 1 (Level1)
-	RGB 14,17,31, 07,11,15 ; morn/day
+	RGB 14,17,31, 07,11,15 ; morn
+	RGB 14,17,31, 07,11,15 ; day
 	RGB 09,09,17, 05,07,13 ; nite
+	RGB 12,13,23, 06,08,11 ; eve
 
 ; group 2 (Mahogany)
-;	RGB 12,19,00, 06,10,00 ; morn/day
+;	RGB 12,19,00, 06,10,00 ; morn
+;	RGB 12,19,00, 06,10,00 ; day
 ;	RGB 06,09,07, 04,05,06 ; nite
+;	RGB 10,14,00, 05,08,00 ; eve
 
 ; group 3 (dungeons)
-;	RGB 21,21,21, 11,11,11 ; morn/day
+;	RGB 21,21,21, 11,11,11 ; morn
+;	RGB 21,21,21, 11,11,11 ; day
 ;	RGB 21,21,21, 17,08,07 ; nite
+;	RGB 18,16,16, 09,08,08 ; eve
 
 ; group 4 (Ecruteak)
-;	RGB 31,19,00, 27,10,05 ; morn/day
+;	RGB 31,19,00, 27,10,05 ; morn
+;	RGB 31,19,00, 27,10,05 ; day
 ;	RGB 15,07,02, 11,04,02 ; nite
+;	RGB 25,14,00, 22,08,03 ; eve
 
 ; group 5 (Blackthorn)
-;	RGB 11,10,16, 05,06,07 ; morn/day
+;	RGB 11,10,16, 05,06,07 ; morn
+;	RGB 11,10,16, 05,06,07 ; day
 ;	RGB 03,04,08, 00,00,00 ; nite
+;	RGB 09,08,12, 04,04,05 ; eve
 
 ; group 6 (Cinnabar)
-;	RGB 31,10,00, 18,06,00 ; morn/day
+;	RGB 31,10,00, 18,06,00 ; morn
+;	RGB 31,10,00, 18,06,00 ; day
 ;	RGB 18,05,09, 17,08,07 ; nite
+;	RGB 25,08,00, 15,04,00 ; eve
 
 ; group 7 (Cerulean)
-;	RGB 17,27,31, 05,15,31 ; morn/day
+;	RGB 17,27,31, 05,15,31 ; morn
+;	RGB 17,27,31, 05,15,31 ; day
 ;	RGB 07,08,22, 07,07,16 ; nite
+;	RGB 14,21,23, 04,11,23 ; eve
 
 ; group 8 (Azalea)
-;	RGB 22,20,10, 17,14,03 ; morn/day
+;	RGB 22,20,10, 17,14,03 ; morn
+;	RGB 22,20,10, 17,14,03 ; day
 ;	RGB 11,11,05, 10,09,07 ; nite
+;	RGB 19,15,08, 14,10,01 ; eve
 
 ; group 9 (Lake of Rage)
-;	RGB 31,08,04, 09,09,08 ; morn/day
+;	RGB 31,08,04, 09,09,08 ; morn
+;	RGB 31,08,04, 09,09,08 ; day
 ;	RGB 18,05,09, 09,09,08 ; nite
+;	RGB 25,06,02, 08,07,06 ; eve
 
 ; group 10 (Violet)
-;	RGB 24,14,31, 13,07,21 ; morn/day
+;	RGB 24,14,31, 13,07,21 ; morn
+;	RGB 24,14,31, 13,07,21 ; day
 ;	RGB 12,03,18, 09,03,15 ; nite
+;	RGB 21,10,23, 11,05,16 ; eve
 
 ; group 11 (Goldenrod)
-;	RGB 25,25,00, 20,17,08 ; morn/day
+;	RGB 25,25,00, 20,17,08 ; morn
+;	RGB 25,25,00, 20,17,08 ; day
 ;	RGB 12,12,00, 10,09,05 ; nite
+;	RGB 21,19,00, 17,13,06 ; eve
 
 ; group 12 (Vermilion)
-;	RGB 27,23,01, 23,11,00 ; morn/day
+;	RGB 27,23,01, 23,11,00 ; morn
+;	RGB 27,23,01, 23,11,00 ; day
 ;	RGB 15,11,01, 11,10,01 ; nite
+;	RGB 21,19,00, 17,13,06 ; eve
 
 ; group 13 (Pallet)
-;	RGB 27,28,31, 17,19,22 ; morn/day
+;	RGB 27,28,31, 17,19,22 ; morn
+;	RGB 27,28,31, 17,19,22 ; day
 ;	RGB 14,14,18, 10,09,13 ; nite
+;	RGB 25,12,10, 21,08,06 ; eve
 
 ; group 14 (Pewter)
-;	RGB 19,19,16, 10,12,15 ; morn/day
+;	RGB 19,19,16, 10,12,15 ; morn
+;	RGB 19,19,16, 10,12,15 ; day
 ;	RGB 09,09,11, 04,05,07 ; nite
+;	RGB 16,14,12, 08,09,11 ; eve
 
 ; group 15 (Mount Moon Square)
-;	RGB 14,17,31, 07,11,15 ; morn/day
+;	RGB 14,17,31, 07,11,15 ; morn
+;	RGB 14,17,31, 07,11,15 ; day
 ;	RGB 09,13,19, 07,07,16 ; nite
+;	RGB 12,13,23, 06,08,11 ; eve
 
 ; group 16 (Indigo)
-;	RGB 21,21,21, 13,13,13 ; morn/day
+;	RGB 21,21,21, 13,13,13 ; morn
+;	RGB 21,21,21, 13,13,13 ; day
 ;	RGB 11,11,19, 07,07,12 ; nite
+;	RGB 20,19,19, 11,10,10 ; eve
 
 ; group 17 (Fuchsia)
-;	RGB 31,18,29, 17,13,20 ; morn/day
+;	RGB 31,18,29, 17,13,20 ; morn
+;	RGB 31,18,29, 17,13,20 ; day
 ;	RGB 14,06,12, 11,03,10 ; nite
+;	RGB 25,13,21, 14,10,15 ; eve
 
 ; group 18 (Lavender)
-;	RGB 23,15,31, 16,05,31 ; morn/day
+;	RGB 23,15,31, 16,05,31 ; morn
+;	RGB 23,15,31, 16,05,31 ; day
 ;	RGB 12,07,17, 08,06,10 ; nite
+;	RGB 20,11,23, 13,03,23 ; eve
 
 ; group 19 (Silver Cave)
-;	RGB 21,21,25, 16,16,16 ; morn/day
+;	RGB 21,21,25, 16,16,16 ; morn
+;	RGB 21,21,25, 16,16,16 ; day
 ;	RGB 13,13,13, 07,07,07 ; nite
+;	RGB 08,18,22, 08,10,19 ; eve
 
 ; group 20 (Cable Club)
-;	RGB 21,21,21, 11,11,11 ; morn/day
+;	RGB 21,21,21, 11,11,11 ; morn
+;	RGB 21,21,21, 11,11,11 ; day
 ;	RGB 21,21,21, 11,11,11 ; nite
+;	RGB 20,19,19, 10,09,09 ; eve
 
 ; group 21 (Celadon)
-;	RGB 19,31,15, 31,22,02 ; morn/day
+;	RGB 19,31,15, 31,22,02 ; morn
+;	RGB 19,31,15, 31,22,02 ; day
 ;	RGB 12,13,09, 09,12,03 ; nite
+;	RGB 11,19,02, 04,14,04 ; eve
 
 ; group 22 (Cianwood)
-;	RGB 15,10,31, 07,05,15 ; morn/day
+;	RGB 15,10,31, 07,05,15 ; morn
+;	RGB 15,10,31, 07,05,15 ; day
 ;	RGB 06,05,17, 02,02,08 ; nite
+;	RGB 13,08,23, 06,03,11 ; eve
 
 ; group 23 (Viridian)
-;	RGB 21,31,07, 13,25,04 ; morn/day
+;	RGB 21,31,07, 13,25,04 ; morn
+;	RGB 21,31,07, 13,25,04 ; day
 ;	RGB 09,14,08, 06,10,04 ; nite
+;	RGB 18,24,05, 11,19,02 ; eve
 
 ; group 24 (New Bark)
-;	RGB 20,31,14, 11,23,05 ; morn/day
+;	RGB 20,31,14, 11,23,05 ; morn
+;	RGB 20,31,14, 11,23,05 ; day
 ;	RGB 09,13,08, 06,09,04 ; nite
+;	RGB 17,24,10, 09,18,03 ; eve
 
 ; group 25 (Saffron)
-;	RGB 31,26,00, 31,15,00 ; morn/day
+;	RGB 31,26,00, 31,15,00 ; morn
+;	RGB 31,26,00, 31,15,00 ; day
 ;	RGB 13,13,01, 08,08,01 ; nite
+;	RGB 25,20,00, 25,11,00 ; eve
 
 ; group 26 (Cherrygrove)
-;	RGB 31,14,28, 31,05,21 ; morn/day
+;	RGB 31,14,28, 31,05,21 ; morn
+;	RGB 31,14,28, 31,05,21 ; day
 ;	RGB 14,07,17, 13,00,08 ; nite
+;	RGB 25,10,20, 25,03,16 ; eve
diff --git a/home/map_objects.asm b/home/map_objects.asm
index 0a66dfdf8..c0e9d0a57 100644
--- a/home/map_objects.asm
+++ b/home/map_objects.asm
@@ -262,6 +262,7 @@ CheckObjectTime::
 	db MORN
 	db DAY
 	db NITE
+	db EVE
 
 .check_hour
 	ld hl, MAPOBJECT_HOUR_1
diff --git a/ram/wram.asm b/ram/wram.asm
index 94568cad1..e847d2123 100644
--- a/ram/wram.asm
+++ b/ram/wram.asm
@@ -2064,6 +2064,7 @@ wCurDamage:: dw
 wMornEncounterRate::  db
 wDayEncounterRate::   db
 wNiteEncounterRate::  db
+wEveEncounterRate::   db
 wWaterEncounterRate:: db
 wListMoves_MoveIndicesBuffer:: ds NUM_MOVES
 wPutativeTMHMMove:: db