How do I check Google Apps Script calls and time limits?

You have started a spreadsheet script with a time-driven trigger. There were times when the code didn't work well even though there was no problem.

Google Apps Script has a limited number of calls and times, so
I suspect that this restriction is imposed.
　https://docs.google.com/a/macros/fourmix.co.jp/dashboard
　https://developers.google.com/apps-script/guides/services/quotas

1. To what extent of these restrictions are used or are subject to these restrictions
　How do I check (API) / Is there a page where I can check the list?

2.
for the limited number of times and hours per day. 　What time is the day based on?
　Is it JST (reset at 00:00 Japan time)? Is it GMT (reset at 09:00 Japan time)?

3. For example, if the Trigger total runtime exceeds 6 hr/day,
　If you run the script manually, you will see an error on the screen, so you will understand. 　Can try{}catch(){} get this limitation when running on a trigger?
　It's past time, so I feel like it's going to be terminated.

Could you please let me know if anyone knows?