What is gmt watch?

A GMT watch, or "Greenwich Mean Time" watch, is a timepiece that displays multiple time zones simultaneously. Primarily, it shows the local time and at least one additional time zone, commonly used by travelers, pilots, and individuals who frequently communicate with people in different parts of the world.

Here are the key features and aspects of a GMT watch:

• Functionality: The main purpose is to display two or more time zones. This is usually achieved through an additional hour hand that makes one rotation every 24 hours, paired with a 24-hour bezel or a sub-dial.
• GMT Hand: A distinct hour hand, often differently colored, indicates the time in a second time zone, such as <a href="https://www.wikiwhat.page/kavramlar/Greenwich%20Mean%20Time">Greenwich Mean Time</a> (GMT) or Coordinated Universal Time (UTC).
• Bezel: Many GMT watches feature a rotating <a href="https://www.wikiwhat.page/kavramlar/Bezel">bezel</a> marked with 24-hour increments. By rotating the bezel, a third time zone can be tracked relative to the GMT hand.
• Movement: GMT watches utilize a specialized movement that allows for the independent setting of the GMT hand. Some movements are "true" GMT movements, where the local hour hand can be adjusted independently in one-hour jumps, while others require stopping the movement to adjust the GMT hand.
• Types: There are different types of GMT watches, including those with a 24-hour subdial instead of a central GMT hand and world timers which display numerous time zones simultaneously.
• Uses: Useful for international travelers, business professionals working across time zones, and pilots who need to track <a href="https://www.wikiwhat.page/kavramlar/Time%20Zone">Time Zone</a>s for flight schedules.
• History: The concept of GMT watches became popular with the rise of international air travel in the mid-20th century, notably with the Rolex GMT-Master developed in collaboration with Pan American Airways.