Your time zone (Time Mode) is a personal setting in AGOA Station, on mobile and on web. It is not available in the Backoffice.
On AGOA mobile
Go to your profile.
In Settings, change Time Mode to any of the 3 options.
On AGOA web
At the top right of your screen, click the icon next to the time.
Click any of the 3 options.
Note: if your Device Local Time matches the Airport Local Time, you'll only be able to select Device Local Time.