Topic Details (Notes format)

What is GMT?

Subject: Static GK (General Knowledge)

Book: General Time Knowledge

Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London, historically used as the international civil time standard. GMT is now often interchanged with UTC, even though there are subtle differences in their definitions. Searches for GMT occur because many older clocks, scheduling apps, and online resources continue to reference GMT, and individuals want to understand how it compares to local zones like Central Time. GMT serves as a historical benchmark that was crucial for global navigation at sea and the broader establishment of time zones in the 19th century.

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