Greenwich is a district in south-east London, England, on the south bank of the River Thames in the London Borough of Greenwich. It is best known for its maritime (ship-building and sailing) history and as giving its name to the Greenwich Meridian (0° longitude) and Greenwich Mean Time
GMT is a time zone abbreviation, which stands for Greenwich Mean Time. This is the time at zero degrees of longitude, which passes through the Greenwich, England.
England is in the first time zone. Greenwich mean time.
Israel is (Greenwich Mean Time) GMT +2 hours, ie. 2 hours ahead of Greenwich, England.
GMT (Greenwich Mean Time) and BST (British Summer Time).
Japan is (Greenwich Mean Time) GMT +9 hours, ie. 9 hours ahead of Greenwich, England.
Greenwich Mean Time (GMT) is a time system originally referring to mean solar time at the Royal Observatory in Greenwich, London, which later became adopted as a global time standard. It is arguably the same as Coordinated Universal Time (UTC) and when this is viewed as a time zone the name Greenwich Mean Time is especially used by bodies connected with the United Kingdom, such as the BBC World Service,[1] the Royal Navy, the Met Office and others.
France is (Greenwich Mean Time) GMT +1 hours, ie. 1 hours ahead of Greenwich, England. Sydney is (Greenwich Mean Time) GMT +10 hours, ie. 10 hours ahead of Greenwich, England. Sydney is 9 hours ahead of France. (Daylight savings not taken into account.)
India has one time zone for the whole country. India is (Greenwich Mean Time) GMT +5.5 hours, ie. 5.5 hours ahead of Greenwich, England.
The USA has 6 Time Zones including Alaska and Hawaii. Eastern Time - is (Greenwich Mean Time) GMT -5 hours, ie. 5 hours behind Greenwich, England. Central Time - is (Greenwich Mean Time) GMT -6 hours, ie. 6 hours behind Greenwich, England. Mountain Time - is (Greenwich Mean Time) GMT -7 hours, ie. 7 hours behind Greenwich, England. Pacific Time - is (Greenwich Mean Time) GMT -8 hours, ie. 8 hours behind Greenwich, England. Alaska Time - is (Greenwich Mean Time) GMT -9 hours, ie. 9 hours behind Greenwich, England. Hawaii Time - is (Greenwich Mean Time) GMT -10 hours, ie. 10 hours behind Greenwich, England. All of China is in the same time zone, so China is (Greenwich Mean Time) GMT +8 hours, ie. 8 hours ahead of Greenwich, England. Depending on where in the USA you are, the difference is between 13 and 18 hours. (Daylight savings not taken into account.)
The Prime Meridian is found at 0 degrees longitude. Additionally, this is the longitude line that goes through Greenwich, England which marks the base time zone GMT or UTC that other time zones are relative to.
Greenwich Mean Time +1
Greenwich mean time!