The system time on your device may not be synced to the correct Zulu date and time. To resolve this, first use the Set Time application on the device to update the date and time.
If the tablet still does not display the correct Zulu date and time after using the Set Time application, open the device settings and manually update the date and time to Zulu.
After updating the time, restart the device. Once the device has restarted, log back in to Aero App using AUD or GEOAxIS.