World Quests all have different durations, with longer durations reserved for more challenging quests. The biggest reset is typically at the daily reset, whichever time that is for your realms timezone ( UTC for US. Which was 11am and 11pm Eastern during the summer but as of last. The majority of them swap out at either the daily reset or 12 hours after that. › wow › comments › what_time_do_world_quests_reset. The Emissary quests reset with the server at.