The Arena times you see in-game is not your local time but based on the server time.
Each server has its own server time, so finding the correct opening times for the arena may be challenging.
Opening times for Arena and Master Arena:
- Asia (Asia) server:
12:00 - 13:59 UTC+8
19:00 - 20:59 UTC+8 - North American (NA) server:
12:00 - 13:59 PST
19:00 - 20:59 PST - European (EU) server:
12:00 - 13:59 UTC
19:00 - 20:59 UTC - Latin American (LA) server:
12:00 - 13:59 BRT
19:00 - 20:59 BRT - Oceania (OC) server:
11:00 - 12:59 AEST
20:00 - 21:59 AEST