A world clock is a clock which displays the time for various cities around the world.
The display can take various forms:
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The clock face can incorporate multiple round analog clock clocks with moving hands or multiple Digital data clocks with numeric readouts, with each clock being labelled with the name of a major city or time zone in the world. The World Clock in Alexanderplatz displays 146 cities in all 24 time zones on its head.
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It could also be a picture map of the world with embedded analog or digital time-displays.
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A moving circular map of the world, rotating inside a stationary 24-hour dial ring. Alternatively, the disc can be stationary and the ring moving.
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Light projection onto a map representing daytime, used in the Geochron, a brand of a particular form of world clock.
There are also worldtime
, both
and
. Sometime manufacturers of timekeepers erroneously apply the worldtime label to instruments that merely indicate time for two or a few
, but the term should be used only for timepieces that indicate time for all major
of the globe.
See also
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Manege Square, Moscow
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Time zone
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Jens Olsen's World Clock (actually an astronomical clock)
