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GMT means Greenwich Mean Time, which is the equivalent of UTC (Coordinated Universal Time). The GMT time zone is based on when it is exactly mid-day over Greenwich, London, UK, i.e. when the sun is at its highest point in the sky there, which would be approximately half-way between sunrise and sunset.

As the earth spins, the sun moves over other countries and they experience mid-day at a later time. If a country is in the time zone GMT -5 (minus five), then when it is mid-day GMT in London, such a country would be five hours behind GMT, i.e. seven a.m. (in the morning) in the GMT -5 zone.

Cuba is GMT -5, for example.

Of course, before the sun was over Greenwich, it had travelled accross Asia and Europe.

It was mid-day there before it was mid-day in London. In those areas East of Greenwich (specifically the 'Greenwich meridian' line of zero longitude) their time zones are GMT + (plus) so many hours. If a country is in the time zone GMT +5 (plus five), then when it is mid-day GMT in London, the time in that other country is five hours ahead of GMT, i.e. it is five o'clock in the late afternoon in that GMT +5 zone.

e.g. Calcutta is GMT +5

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Related Questions

How does GMT work?

You have to do a conversion to your local time. If you live in the GMT + 5 (Eastern standard time) and wish to find out when an even in GMT + 1 is at you would add four hours. It is the difference between the time zones. If you want to find out what time an event is at that is GMT - 4 you would add 9 hours, because 5 - -4 is 5+4 = 9. That is the general rule, your GMT - Other TimeZone. GMT + 5 - GMT - 4 = 5 - -4 GMT + 5 - GMT + 1 = 5 - 1 Then the result is added to the time.


What is Cincinnati's GMT?

Cincinnati is located in the Eastern Time Zone (GMT-5).


What is the GMT equivalent of Florida's time zone?

Florida is in the Eastern Time Zone, which is 5 hours behind Greenwich Mean Time (GMT -5).


What is the time difference between CST and GMT?

Central Standard time is GMT -6 Central Daylight Time GMT -5


What is Hong kong time in 5 pm GMT?

5 pm GMT = 1 am HKT


What is the time difference between US Central time and Greenwich mean time?

GMT is the timezone in London, England. All other time zones are described relative to GMT. For example, New York is GMT - 5 hours. Los Angeles is GMT - 8 hours. Standard time is how we set our clocks when we are NOT observing Daylight Saving Time. Daylight Saving Time reduces the time-difference between your timezone and GMT by 1 hour. For example, When NYC observes DST, the timezone in NYC becomes GMT-4 (instead of the normal GMT-5)


What is 2.40 GMT in and EST?

2.40 GMT is 9:40 PM EST. EST is 5 hours behind GMT, so you need to subtract 5 hours from the GMT time to get the equivalent EST time.


What is GMT for Pakistan?

You'll have to Add 5 to GMT to get actual time in Pakistan.


What is the time difference brtween ist and gmt?

India Standard Time (IST) is 5:30 hours ahead of GMT.


How many hours ahead is Pakistan GMT?

Pakistan is normally 5 hours ahead of Greenwich Mean Time (GMT+5), but during daylight saving time, it is 4 hours ahead (GMT+4).


What time is Florida in GMT?

Florida is in the Eastern Time Zone, which is 5 hours behind Greenwich Mean Time (GMT-5). However, Florida does observe daylight saving time, so during daylight saving time (spring to fall), it is 4 hours behind GMT (GMT-4).


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