This is the Classic Era Calendar! Classic Season of Mastery and Classic Progression calendars coming soon. Please check the ZG tablets (read FAQ below) for your instance boss spawn BEFORE using a Gurubashi Mojo Madness. Looking for Classic Season of Mastery? Help out and report SoM boss spawns.

Friday's summon
ZG resets today Zul'Gurub resets today



Move out of lightning cloud and spread out.


Buy a Gurubashi Mojo Madness potion or bring an Alchemist to craft it requiring 1x Blood of Heroes (BoP), 1x Massive Mojo, 6x Powerful Mojo and 1x Black Lotus.

Region (Experimental)


What is the boss rotation?
Classic Era Edge of Madness bosses rotate every two weeks (every other Tuesday) and are not tied to the instance reset timers.
Are you sure this is right?
Verify which boss will spawn by inspecting the tablets in the Zul'gurub instance around the perimeter of the Edge of Madness. Look for text that reads "is near..." or "close to..."
Which boss will my saved raid instance ID spawn?
Your saved raid instance ID will snapshot and spawn the boss according to the calendar day the raid instance ID was created.
You're great and your calendar is great! [or] You suck and your calendar sucks!
Please submit feedback and bug reports to the Toe's Romper Room - Hackers Only Discord channel.
What about Classic Season of Mastery servers?
SoM calendar is coming soon. Help out and report SoM boss spawns.
What about Classic Progression (TBC and beyond) servers?
With the release of TBC, ZG has the chance to spawn one of two EoM bosses. This change breaks the current calendar format. READ THE TABLETS in your ZG before summoning, if it doesn't say "is near" in the boss tablet text, that boss does not have a chance to spawn. Stay tuned for updates.