We have a good amount of flexibility in our event times.

06:00 - Free Stamina
10:00 - Cerberus
15:00 - Baal
18:00 - Free Stamina
20:00 - Guild Warfare
21:00 - Noble Lady
All weeekend - Heaven Palace

So you can plan accordingly for these events. If you want to participate in events at a different time, you can play on a server in a different time zone. For example, if you wanted to do Cerb and Baal in the evenings for US East, you could play on an Asia-Pacific server and fight Baal/Cerb at 9pm and 2am respectively.