Question

Explain the Greenwich meantime.

Answer 1

1. Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory, located at Greenwich in London.
2. It is measured at the longitude of zero degrees.
3. The Earth is divided into 24 zones, each with a width of 15 degrees longitude.
4. These regions are called ‘Time Zones’. The time difference between two adjacent time zones is 1 hour.