There is a category of watches equipped with special feature: a second- time- zone indicator. These watches show both local time and the time in another time zone. They come in many varieties and have many names. Some are called GMT watches. GMT stands for Greenwich Mean Time, the time at the Prime Meridian in Greenwich, England, and the standard time for navigation and international radio broadcasts. GMT watches have an additional hour hand, set separately from the regular hour hand, which gives the hour in a second time zone using a 24- hour scale on the watch dial. Despite the watcha?