How can I fix the time and time zone on my device?

a. For iOS devices: 
i. Go to Settings > General > Date & Time. 
ii. Enable Set Automatically to allow the network to manage your time and time zone settings.
iii. If the time zone is still incorrect, make sure Location Services is enabled.
Go to Settings > Privacy & Security > Location Services > System Services
> Setting Time Zone.
b. For Android devices: 
i. Go to Settings > System > Date & Time (or Settings > General Management > Date
& Time on some devices). 
ii. Enable Automatic Date & Time and Automatic Time zone to sync with the network. 
iii. If the time zone is still incorrect, turn off Automatic Time zone and manually
select the correct time zone.

Alternative Solution:
If the time zone issue persists after following the troubleshooting steps above, you may consider
setting dual clocks as an alternative solution.