Board Game Arena

Thank you, so could I assume that I need to put in my city since there are 4 time zones in USA? I don't see a place to add in my time zone in profile.

Please explain playing hours and how they affect turn-based play.
Also, what time zone does it reference and is it locked to 12 hour intervals?
Lastly, please explain how much time you have when you are on say a 24 moves per day game.
Thank you