One lap. A whole day.
On a conventional GMT display, the extra hand takes 24 hours to make a full turn. Read it against the 24-hour scale: 08 is eight in the morning; 20 is eight in the evening. The ordinary hour and minute hands still tell their own time.
The useful part is choosing what that second time means to you. Home while you travel. A friend overseas. The city where a collector you trade with lives. Give the extra hand a job.
Two places, kept separate.
Grand Seiko’s 9F86 instructions show two uses: an AM/PM indication for the same zone, or a second time zone. In its travel example, the regular hour hand follows local time and the 24-hour hand keeps home time.
Setting controls differ between movements. Check your watch’s instructions before adjusting it.
A small habit worth keeping.
Try the GMT desk with two cities you actually care about. Notice the date as well as the hour. Tomorrow can already have started somewhere else.
A useful watch detail can be visually satisfying and quietly helpful at the same time. Our Navy / Red artwork keeps the bezel as its own subject. It’s a detail I enjoy using on a watch and exploring in a graphic.
The same 24-hour scale is the starting point for our standalone Navy / Red shirt graphic. Explore the GMT bezel T-shirt →
Read the source.
Manufacturer instructions for the examples in this note. Always use the manual for your exact watch.
