New York is on US Eastern Standard Time which is the same as Greenwich Mean Time -5.
That means that New York is 5 hours behind the time at the Prime Meridian in Greenwich England (GMT 0).
Examples:
When it is 6:00 am in New York, it is 11:00 am at Greenwich Mean Time in England.
The US Central Standard time = GMT -6, so when it is 6:00 am in New York, it is 5:00 am in the Central time zone and 11:00 am in England.
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Moscow is (Greenwich Mean Time) GMT +3 hours, ie. 3 hours ahead of Greenwich, England. Tanzania is (Greenwich Mean Time) GMT +3 hours, ie. 3 hours ahead of Greenwich, England. There is no time difference. (Daylight savings not taken into account.)
London, England is at (Greenwich Mean Time) GMT. Perth, Australia is (Greenwich Mean Time) GMT +8 hours, ie. 8 hours ahead of Greenwich, England.
Holland is (Greenwich Mean Time) GMT +1 hour, ie. 1 hour ahead of Greenwich, England. Italy is (Greenwich Mean Time) GMT +1 hour, ie. 1 hour ahead of Greenwich, England. There is no time difference between Amsterdam and Rome. (Daylight savings not taken into account.)
Australian Eastern Standard Time is ten hours ahead of Greenwich Mean Time. Australian Eastern Summer Time is eleven hours ahead of Greenwich Mean Time.
England is at (Greenwich Mean Time) GMT. Munich is (Greenwich Mean Time) GMT +1 hour, ie. 1 hour ahead of Greenwich, England. England is 1 hour behind Munich. (Daylight savings not taken into account.)
Greenwich Mean Time is the local mean time at Greenwich, England, which is along the prime meridian (0° longitude).
Glasgow is one hour ahead of Greenwich Mean Time from the last Sun. of Mar. until the last Sun. of Oct. Glasgow is on GMT the rest of the year. If you mean Greenwich in NYC, Glasgow is usually five hours ahead.
Greenwich Mean Time is six hours ahead of Mountain Daylight Saving Time.
India Time is five and a half hours ahead of Greenwich Mean Time.
Moscow is (Greenwich Mean Time) GMT +3 hours, ie. 3 hours ahead of Greenwich, England. Lake Baikal is (Greenwich Mean Time) GMT +8 hours, ie. 8 hours ahead of Greenwich, England. Moscow is 5 hours behind Lake Baikal.
Sweden is (Greenwich Mean Time) GMT +1 hour, ie. 1 hour ahead of Greenwich, England. US Pacific Time - is (Greenwich Mean Time) GMT -8 hours, ie. 8 hours behind Greenwich, England. Oregon is 9 hours behind Sweden. (Daylight savings not taken into account.)