WoW Classic [US] Pagle - "2020-04-07T05:13:18.921Z"
Note: If you are looking for a specific Edge of Madness boss be sure your instance is created on the day where that boss is listed above. The boss that will spawn in your instance is decided according to the calendar day when the instance is created and saved. Even if a new Edge of Madness summon boss cycle begins, your instance may have not yet reset, and you will still get the summon chosen at the time of instance creation.
EoM Calendar brought to you by WoW Classic Informal Alliance Guild on US Pagle.