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Some equipment and monsters change behavior depending on the Time of Day , and some quests can only be completed at certain hours in Vana'diel.
Game Term
Hours
Affects
Daytime 06:00-18:00
Arco De Velocidad , Brisingamen (HQ ), Clown's Subligar (HQ ), Dandy Spectacles (HQ ), Daylight Dagger , Fenrir items, Garden Bangles (HQ ), Horror Head II , Ladybug Ring (HQ ), Ladybug Earring (HQ) , Louhi's Mask , Lycopodium Sash , Nocturnal mobs go to sleep, Sunlight Pole , Vampire Cloak
Nighttime 18:00-06:00
Brisingamen (HQ ), Clown's Subligar (HQ ), Dandy Spectacles (HQ ), Diurnal mobs go to sleep, Eerie Cloak +1 , Fenrir items, Bat Trios and Giant Bats present in outdoor areas, Horror Head , Louhi's Mask , Ninja Artifact Armor , Ninja Relic Armor , Nightmare Sword , Schwarz Axt , Shiranui , Vampire Boots , Vampire Cloak , Vampire Earring , Vampire Mask
Dusk to Dawn 17:00-07:00
Koga Hakama +1 , Koga Hatsuburi +1 , Koga Kyahan +1 , Koga Tekko +1 , Ninja Hakama +1 , Ninja Kyahan +1 , Rossignol , Hachiya Kyahan
New Day 04:00
Magian Spectacles begin evaluating a new day
Dawn 06:00-07:00
Day 07:00-17:00
Dusk 17:00-18:00
16:00-18:00 for Lovers in the Dusk
Evening 18:00-20:00
Dead of Night 20:00-04:00
Undead present in outdoor areas
In-game dawn and dusk are different from their real-life counterparts in that the in-game ones are considered part of daytime rather than nighttime . 