Correct option is A
Greenwich Mean Time (GMT) is based on the Greenwich Observatory, which is located in Greenwich, a district in London, United Kingdom. GMT serves as the standard time against which all other time zones are measured. The Prime Meridian, which is at 0° longitude, runs through Greenwich and marks the reference point for world time.
Information Booster:
- GMT was established as the universal time standard in the 19th century and remains a key reference.
- The Royal Observatory in Greenwich is a UNESCO World Heritage Site.
- Greenwich time was replaced by Coordinated Universal Time (UTC), which is more precise, but GMT remains widely used for general purposes.
- The Prime Meridian divides the world into the Eastern and Western Hemispheres.
- The use of GMT started in 1884 at the International Meridian Conference.
Additional Information:
- Amsterdam is located at 5°E longitude, far east of Greenwich.
- Chicago is in the Central Time Zone and is significantly behind GMT.
- New York follows the Eastern Time Zone and is also ahead of GMT by several hours