Repeatable Quest
From Ymirheim Wiki
Repeatable Quests are a type of quest that can be completed several times instead of just one. A lot of cities, town, villages and smaller players' hubs (crossroads, camps) have Quest boards. Quest boards are designed as a list of repeatable quests which are classified by their level requirement. After its completion, the quest goes on cooldown for a certain amount of time and later reappears again at the quest board.
Each of the repeatable quests go off CD every new in-game day. Every in-game day is exactly 120 minutes (2 hours) of the real time.
Repeatable quests also have level requirements, which mean that the quests will not be shown on the quest board if the player is too low or too high on character's level.