How Do I Set the Time Zone for My Account and My Campaigns?

You can set your time zone in the profile section under the main profile drop-down. 

Here you can set your desired time zone. If you're not sure what time zone you are in, simply select the nearest city from the drop-down.

You can also set the date and the number format here. The European date format (DD.MM.YYYY) is set as the default.