In military GMT is known as Zulu time.Greenwich Mean Time was the same as Universal Time (UT), until the introduction of UTC in 1972 a standard astronomical concept used in many technical fields. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, and in casual use for the most parts it is the same. Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. Find the exact time difference with the Time Zone Converter Time Difference Calculator which converts the time difference between places and time zones all over the world. Other major cities in the area are Abidjan, Dakar, Grand Dakar, Accra Principal Cities: The largest city in the GMT timezone is London from United Kingdom with population about 7.557 million people. Offset: GMT is 0 hours ahead Greenwich Mean Time (GMT) and is used in EuropeĬountries: It is used in following countries: Burkina Faso, Côte d'Ivoire, Britain (UK), Guernsey, Ghana, Greenland, Gambia, Guinea, Guinea-Bissau, Ireland, Isle of Man, Iceland, Jersey, Liberia, Mali, Mauritania, St Helena, Sierra Leone, Senegal, Sao Tome & Principe, Togo Eastern Standard Time (EST) is 5 hours behind Greenwich Mean Time ( GMT-5 ). Offset UTC 0:00 hoursħ:00 am 07:00 EDT (Eastern Daylight Time) (New York City, NY, USA). New York State, abbreviated NY, is in the Eastern Time Zone of the United States of America (USA). Greenwich Mean Time is 4 hours ahead of EDT (Eastern Daylight Time)ġ1:00 am 11:00 in GMT is 7:00 am 07:00 in New York City, NY, USAīest time for a conference call or a meeting is between 12pm-6pm in GMT which corresponds to 8am-2pm in New York Cityġ1:00 am 11:00 Greenwich Mean Time (GMT).