I’m in a formal alliance in a quad speed game. How long after I end it can I attack?
Until next pay period. So, if you quit the alliance at the beginning of one cycle, it will end by the next. Err, at least that’s my experience.
I won that one because an ally-turned-enemy thought he’d have more time to prepare. He didn’t.
That’s what I think. So 6 hours of real life.
Per the Codex “It takes 24 ticks to end an alliance.”