To elaborate you can toggle the ingame clock between 3 settings by clicking it.
Eorzia Time (the game time of day)
Server Time (the local time of the home servers +9gmt)
Local Time (whatever time the device you are playing on is set to)
If you are set to local time and it is wrong, you need to fix it on the device while the game is off. Most common issue is you are set to the wrong time zone.