How to re set WET on my Honda Sat.Nav.

[Major]

Since having a new battery replacement I have noticed that when I enter a destination in my Honda Sat.Nav. it displays the correct mileage but it also tell me how long it will take BUT the time is always past midnight.

For example if I put in an address in my high street it will display 0:10. even though it is currently 15:30 real time.  I have tried going into the settings and setting the clock time but I think the issue is WET always read 00:00. Can't seem to set this.....but if it is automatic it is not picking up time signal.

Any idea please?