Change time of game

What Is the latest moment you need to change a time for a game

Is a question about which I also have doubts

I'm away today and my game was changed 5 hours before the match.. Was 5-41 is now 1-30am lol.. Not a problem with the time of the game. 5 hours just seems short notice

I don't know if its changed, but when I first started playing, a couple of times I changed the ko time, just 30 minutes before the scheduled start.