XF 1.3 How can i set forum time?

[Tayfun]

Hello guys,
how can i set forum time as GMT +3 general and for new register users.

 

[Liam W]

Hello guys,
how can i set forum time as GMT +3 general and for new register users.

admin.php?options/list/basicBoard

'Guests Time Zone'.

Users can choose their time zone at registration, so new users don't matter.