I need to have leaderboards reset at 21:00 on Monday, Japan Standard Time
Is there a way to tweak the weekly reset to be something other than UTC 0:00?
No there is no way to change the system leaderboard reset time I'm afraid. What you would be best doing here is using a challenge leaderboard. That way the when the challenge hits the designated endtime the ChallengeWon/Lost messages will be sent out to the participants. Does that sound like it would work for you here ? You can read more about these leaderboards here.
Thank you for that article. Is there a way to make a challenge leaderboard mimic a weekly leaderboard with the only difference being that it ends and then restarts at a specific time?