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Greenwich Mean Time (also known as GMT) was established in 1675. It was first established as an aid to mariners to determine longitude at sea, providing a rough reference time.

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What are several time zones that pass over the US?

Eastern Standard Time zone {EST} = GMT-5 Central Standard Time zone {CST} = GMT -6 Mountain Standard Time zone {MST} = GMT -7 Pacific Standard Time zone {PST} = GMT -8 Alaska Standard Time zone {AST} = GMT -9 Hawaii Standard Time zone {HST}= GMT -10


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 time is 7PM to 4 AM GMT to Eastern standard time?

7 PM to 4 AM GMT is the same period as 2 PM to 11 PM EST.


What are the names of the Canadian time zones?

The names are... Pacific Standard Time Mountain Standard Time Central Standard Time Eastern Standard Time Atlantic Standard Time and Newfoundland Standard Time


What will the time be in est zone if gmt is 17.30?

The answer to this question will depend on what you are using the abbreviation IST to stand for. IST could represent Irish Summer Time, Israeli Standard Time, Iran Standard Time, or Indian Standard Time. The time zone information for each is below to compare to GMT: Irish Summer Time GMT/UTC +1 Israeli Standard Time GMT/UTC +2 Iran Standard Time GMT/UTC +3:30 Indian Standard Time GMT/UTC +5:30 Examples: If it were GMT 8:30 am, the Irish Summer Time would be 9:30 am. If it were GMT 8:30 am, the Israeli Standard Time would 10:30 am. If it were GMT 8:30 am, the Iran Standard Time would 12:00 pm (noon). If it were GMT 8:30 am, the Indian Standard Time would 2:00 pm.

Related Questions

What are several time zones that pass over the US?

Eastern Standard Time zone {EST} = GMT-5 Central Standard Time zone {CST} = GMT -6 Mountain Standard Time zone {MST} = GMT -7 Pacific Standard Time zone {PST} = GMT -8 Alaska Standard Time zone {AST} = GMT -9 Hawaii Standard Time zone {HST}= GMT -10


What time is the different between GMT and IST?

Irish Summer Time is one hour ahead of Greenwich Mean Time (GMT). Israel Standard Time is two hours ahead of GMT. India Standard Time is five and a half hours ahead of GMT.


How many time zone are there across Canada?

Canada has 6 time zones:Pacific Standard Time (GMT -8:00)Mountain Standard Time (GMT -7:00)Central Standard Time (GMT -6:00)Eastern Standard Time (GMT -5:00)Atlantic Standard Time (GMT -4:00)Newfoundland Standard time (GMT -3:00)


What is the time difference between CST and GMT?

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


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 time is 7PM to 4 AM GMT to Eastern standard time?

7 PM to 4 AM GMT is the same period as 2 PM to 11 PM EST.


What are the names of the Canadian time zones?

The names are... Pacific Standard Time Mountain Standard Time Central Standard Time Eastern Standard Time Atlantic Standard Time and Newfoundland Standard Time


What will the time be in est zone if gmt is 17.30?

The answer to this question will depend on what you are using the abbreviation IST to stand for. IST could represent Irish Summer Time, Israeli Standard Time, Iran Standard Time, or Indian Standard Time. The time zone information for each is below to compare to GMT: Irish Summer Time GMT/UTC +1 Israeli Standard Time GMT/UTC +2 Iran Standard Time GMT/UTC +3:30 Indian Standard Time GMT/UTC +5:30 Examples: If it were GMT 8:30 am, the Irish Summer Time would be 9:30 am. If it were GMT 8:30 am, the Israeli Standard Time would 10:30 am. If it were GMT 8:30 am, the Iran Standard Time would 12:00 pm (noon). If it were GMT 8:30 am, the Indian Standard Time would 2:00 pm.


How many times zones are in the 48 touching states?

There are four time zones in the US that are continuously connected to each other geographically (48 states, excluding Alaska and Hawaii). Moving from east to west, these are: * Eastern Standard Time (GMT -5) * Central Standard Time (GMT -6) * Mountain Standard Time (GMT -7) * Pacific Standard Time (GMT -8) The two US Time Zones that do not physically touch other US states are: * Alaska Standard Time (GMT -9) * Hawaii Standard Time (GMT -10)


Pakistan standard time in time zone is equivalent to what value of GMT?

Pakistan Standard Time (PST) is normally UTC/GMT +5 hours and UTC/GMT +6 hours with DST offset.


What is the time difference between arizona standard time and gmt?

Arizona does not observe daylight saving time, so it is on Mountain Standard Time (MST) all year round. During daylight saving time, GMT is 7 hours ahead of MST. When Arizona is in standard time, GMT is 7 hours ahead.


How many hours between GMT and PST?

GMT (Greenwich Mean Time) is eight hours ahead of PST (Pacific Standard Time or Pitcairn Standard Time).