Question

what is the significance of greenwhich mean time​

Answer 1

Answer:

Well, The Greenwich Mean time serves as the basis for the world's standard time zone system.

Explanation:

Greenwich Mean Time (GMT) is the time measured on the Earth's zero degree line of longitude, or meridian.

This runs from the North Pole to the South Pole, passing through the Old Royal Observatory in the London suburb of Greenwich.

This line has been called the Greenwich Meridian since 1884, and it is from here that all terrestrial longitudes are measured and the world's time zones are calculated.

Generally, if you are in a country east of the GMT, your local time is ahead of GMT. If you are in a country west of the GMT then it is behind of GMT.