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The original GMT Master watch has a 24-hour display fourth hand complication directly linked to and displaying the same time zone as the standard 12-hour hand. This GMT hand enabled the crews to set the watch to GMT or another time zone, and, using the rotatable 24-hour scale bezel, set to the correct offset, a second time zone could be read ...
In 1954 Rolex introduced a "tool watch" known as the GMT-Master. The GMT-Master had all the usual Rolex features including a watertight Oyster case, Perpetual movement, and luminous hands and markers, but added a 24-hour hand designed to keep time in a second time zone. The GMT-Master was designed for Pan American Airways pilots, navigators and ...
The tz database partitions the world into regions where local clocks all show the same time. This map was made by combining version 2023d with OpenStreetMap data, using open source software. [1] This is a list of time zones from release 2024b of the tz database. [2]
In 1954, produced a wristwatch which showed two time zones at once in the Rolex GMT Master ref. 6542. [69] Yet again, it was not the first company to do so, as the Longines DualTime preceded the GMT by a full quarter of a century. [70] In 1956, Rolex made a wristwatch with an automatically changing day and date on the dial in the Rolex Day-Date ...
The design became widely known when Rolex designed the Rolex GMT Master for Pan-Am pilots in 1954. A 24-hour watch with a compass card dial can be used to determine direction when set to local noon and used in conjunction with the Sun. Many (but not all) digital watches can be set to show the time in 24-hour format.
RR Auction house is offering the GMT-Master ‘Pepsi’ model watch which belonged originally to the late astronaut Edgar Mitchell – the sixth man to walk on the Moon.
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