3 GMT Watches For The Practical-Minded Jetsetter

Watches & Jewellery What is a GMT watch? But first, a little background on GMT The acronym refers to Greenwich Mean Time, which was established in 1884 as the prime meridian against which all other time zones are referenced The prime meridian is the line of longitude at 0Ëš; any time zone to its east is ahead of GMT while to its the west is behind GMT.

Every 15Ëš longitude represents a one-hour difference Unlike a world-timer displaying 24 time zones, a GMT watch usually displays only two time zones - the home time and the local time It is also different from a two-time zone watch with only 12-hour scales since a GMT watch has a 24-hour scale, often with the additional AM and PM display.

This scale is often found on a rotatable bezel, indicated by a dedicated hand that makes a complete round on the dial every 24 hours When travelling abroad, one can either maintain the GMT scale as it is for home time or set a second time zone by moving the scale forward or backward to the desired time. . Source