This happens if device is shut down by removing power connection rather than switching it off by hitting Power button on backside of device.
We recommend to always apply automatic fetch of time/date and timezone.
There is a method how you can do this:
1. Please go to system settings in Kiosk and go to Date and Time.
2. Please tick mark the Automatic Date and Time option in it.
3. Please also tick mark the Automatic Time zone option in it.