Michel Herbelin CAP CAMARAT GMT Mode D'emploi page 12

4. Reading the time in 24 cities around
the world
During the day, you can read the time in 24 time
zones by adjusting the bezel ring.
- Unscrew the bezel ring adjustment crown (6).
- By turning the crown, align the city of your
second time zone with your GMT hand.
You can now read the time for 24 cities around
the world on the 24-hour scale.
WARNING :
The time displayed for the 24 cities is only correct at the time of adjustment.
Example :
The time is now 20:11 in Paris. Adjust the bezel ring by positioning Paris
at 20 on the 24-hour scale. The GMT hand indicates that it is 11:11 in Los
Angeles. Once the bezel ring is adjusted, the 24 time zones are correct.
The time is thus 04:11 in Tokyo, 19:11 in London, etc.