I just want to know the time to enter to the champ trial
As far as I know all servers are GMT+8. I'm from the Netherlands which means that for the 'Dragon' event it is at 05:00 midnight and the 'Phoenix' event is 14:00 in the afternoon.
I use this side to check the event times for CET, but there are also other timezones. So maybe you this is useful for you too.
The Champ Trial is then between 13:30 & 14:00.