Clock
Configuring the world clock
Add multiple clocks to view the time in various cities around the world.
1. Open 
Clock.
2. From the World clock tab, you can:
– Add a city: Touch 
. Enter a city name or select a city from the list.
– Set the system date and time: Touch
> Date & time and configure the settings.
– Delete a city: Touch and hold the city you want to delete. Touch 
Enabling dual clocks
By default, your device displays the network time. Enable dual clocks to display the time in your current time zone and your home time zone on the lock screen.
1. Open Clock.
2. Under World clock, touch > Date & time .
3. Switch on Dual clocks. Touch Home city and select your home time zone from the list of cities.
Only one clock is displayed when the local time zone is the same as the home time zone.
Questions about your Huawei Mate 10? Post in the comments!
Huawei Mate 10 Manual [PDF]