To configure the date and time of the DT78xx module, use the tzdata package, as follows:.
Verify that the tzdata package is installed by entering the following command:
#
dpkg -s tzdata
If needed, install tzdata by entering the following command:
#
apt-get install tzdata
Run the configuration wizard of tzdata by entering this command:
# dpkg-reconfigure tzdata
Select the appropriate country and timezone.
Save the configuration.