gioarmani Posted February 29, 2008 Report Share Posted February 29, 2008 Not many people know that on a GMT bezel, the wearer can use the 24-hour dial for approximate navigation anywhere between the Tropic of Cancer and the Arctic Polar Circle. But, both the 12 and the 24 hour hand must be synchronized to display local time. Method 1: When laid horizontally, the dial will head North if the 24 hour hand is pointed towards the sun. Method 2: If the 12 hour hand is pointed at the sun, the 24 hour hand will point North. The margin of error directly depends on the difference between local official time and actual local solar time, which is why you have to be between the Tropic of Cancer & the Arctic Polar Circle. But one doesn't need to get too much in the technical details for approximate North, East, South, West navigation. Quote Link to comment Share on other sites More sharing options...
Victoria Posted February 29, 2008 Report Share Posted February 29, 2008 Another excellent tip from Gioarmani! I think I heard that from Bear Grylls too, but no matter. Thanks. Quote Link to comment Share on other sites More sharing options...
Nanuq Posted February 29, 2008 Report Share Posted February 29, 2008 You got it! Take care to handle Daylight Savings Time, or your "north" will be off by 30 degrees. Quote Link to comment Share on other sites More sharing options...
gioarmani Posted February 29, 2008 Author Report Share Posted February 29, 2008 You got it! Take care to handle Daylight Savings Time, or your "north" will be off by 30 degrees. Very true. Quote Link to comment Share on other sites More sharing options...
cornerstone Posted March 1, 2008 Report Share Posted March 1, 2008 Or get yourself a "Jungle Master" Perhaps I could 'reverse engineer' a GMT out of it, point it North and it tells me the time in Paris... Quote Link to comment Share on other sites More sharing options...
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