Question

importance of greenwich mean time (gmt)​

Answer 1

Answer:

As the reference for GMT, the Prime Meridian at Greenwich therefore became the centre of world time and the basis for the global system of time zones. ... It was recommended that the meridian line would indicate 0° longitude. Therefore this also became the start of the Universal Day.

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Answer 2

-The ‘Greenwich Mean Time’ (GMT) is the time that can be measured by the help of “Earth’s zero degree” line of longitude, or meridian.

This line called the Greenwich Meridian runs from the ‘North Pole’ to the ‘South Pole’ and passes through the ‘Old Royal Observatory’ in Greenwich, London.

-Keeping this line as the marker, the terrestrial longitudes are marked and measured and the world’s various time zones are calculated.

-If a country lies west to the meridian, then the time will be behind and will lose from the GMT.

-If a country lies east to the meridian, then it will be ahead of GMT and will gain time.