Night

Category:Terminology
Some equipment and monsters change behavior depending on the Time of Day.
Game Term 	Hours 	Affects
Daytime 	06:00-18:00	Daylight Dagger, Arco De Velocidad, Fenrir items
Nighttime 	18:00-06:00	Ninja Artifact Armor, Nightmare Sword, Fenrir items, Giant Bats spawn in outdoor areas, Diurnal mobs go to sleep
Dusk to dawn	17:00-07:00	Ninja Artifact Armor +1
 	 	
? 	04:00-06:00	
Dawn 	06:00-07:00	
? 	07:00-17:00	
Dusk 	17:00-18:00	Lovers in the Dusk
Evening 	18:00-20:00	
? 	20:00-04:00	Undead spawn 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. (According to Wikipedia, dusk refers to a time shortly after sunset.)