Yay. happy time

Hooray more happy time

In which time zone?
WoW Americas Region comprises:

  • North America
  • Central America
  • South America
  • Australia/New Zealand/South East Asia
  • Caribbean Islands, Hawaii, Guam, etc.

All those have different time zones, some almost opposite each other.

Maint is done during the smallest concurrent population (when the least players are on overall). Further, it is generally done during work hours for Blizzard, although early in their morning.

There is no “good” time that does not impact some portion of the player base. You are right, it has been this way for 20 years almost, because that is what has the least impact overall.