Now you arrive in the main menu, go to the CHANGE SETTINGS menu and inside go to the DATE&TIME menu here you can adjust manually the date and time.
REMARK: If you don't see the CHANGE SETTINGS menu at the bottom of the main menu it's probably because you have a software update available. In this case the CHANGE SETTINGS button is changed into "New software available!". Click on this button first to update your frame, once done, the CHANGE SETTINGS menu will be visible again.
You frame is now adjusted to the right time!