I would imagine it has to be on world 37.
World 36 and 35 both had events within the first month (sooner than this one is gonna run). And 37 has already been exempt from an active event already.
Unless they’re experimenting with keeping the PP market alive a little longer. If players don’t get their flag buffs and resource packages they’ll keep buying and keep buying.
Inno do make a lot more from the events tho. They literally kill off pp, whereas the market just transfers. I’d be shocked if 37 isn’t involved in this event.