Language and time zone
You pick the interface language in the menu; times follow your organization's time zone.
Language
At the bottom of the menu choose Türkçe, Deutsch or English. If you're signed in, your choice is saved to your account. If saving fails you'll see a note and the choice only applies in this browser.
Time
Times are shown in your organization's time zone. If a displayed time differs from it, the short time zone name appears next to it, so the same moment never quietly shows two different times on two screens.