Typically countries in the Western Hemisphere with negative longitude values will be behind Greenwich time and those in the eastern hemisphere with positive longitude values will be ahead of Greenwich time.
For example, Oslo Norway which is east of Greenwich is one hour ahead of GMT (GMT +1) and the Azores (GMT -1) which is west of Greenwich is one hour behind GMT.
Helsinki, Finland is 2 hours ahead of Greenwich
Countries to the West of England (America etc.) are behind Greenwich Mean Time and Countries to the East are ahead. An example is France is approx. 1hr ahead of England time wise, and America is 5hr behind.
Australian Eastern Standard Time is ten hours ahead of Greenwich Mean Time. Australian Eastern Summer Time is eleven hours ahead of Greenwich Mean Time.
Moscow is 4 hours ahead of London. For example if it is 2pm in London, it is 6pm in Moscow.
Darwin is (Greenwich Mean Time) GMT +9.5 hours, ie. 9.5 hours ahead of Greenwich, England. Perth is (Greenwich Mean Time) GMT +8 hours, ie. 8 hours ahead of Greenwich, England. If it is noon in Perth, it is 1:30pm in Darwin.
Helsinki, Finland is 2 hours ahead of Greenwich
The time zone that is the most ahead of Greenwich Mean Time (GMT) is the Line Islands Time Zone, which is UTC14 hours.
Germany is (Greenwich Mean Time) GMT +1 hour, ie. 1 hour ahead of Greenwich, England. Australia has 3 Time Zones. Eastern is (Greenwich Mean Time) GMT +10 hours, ie. 10 hours ahead of Greenwich, England. Central is (Greenwich Mean Time) GMT +9.5 hours, ie. 9.5 hours ahead of Greenwich, England. Western is (Greenwich Mean Time) GMT +8 hours, ie. 8 hours ahead of Greenwich, England. Germany is 8-10 hours behind Australia. (Daylight savings not taken into account.)
Countries to the West of England (America etc.) are behind Greenwich Mean Time and Countries to the East are ahead. An example is France is approx. 1hr ahead of England time wise, and America is 5hr behind.
The time zone that is the furthest ahead of Greenwich Mean Time (GMT) is the Line Islands Time Zone, which is UTC14 hours.
Singapore is eight hours ahead of Greenwich Mean time. Greenwich Mean Time, or GMT starts in London. Currently England is operating on BST or British Summer Time which is one hour ahead of Greenwich Mean time. This Autumn it will fall back to original GMT. So for this moment, Singapore is 7 hours ahead of London, eight hours ahead of GMT.
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.)
Australian Eastern Standard Time is ten hours ahead of Greenwich Mean Time. Australian Eastern Summer Time is eleven hours ahead of Greenwich Mean Time.
Australia has 3 Time Zones. Eastern is (Greenwich Mean Time) GMT +10 hours, ie. 10 hours ahead of Greenwich, England. Central is (Greenwich Mean Time) GMT +9.5 hours, ie. 9.5 hours ahead of Greenwich, England. Western is (Greenwich Mean Time) GMT +8 hours, ie. 8 hours ahead of Greenwich, England. Quito is (Greenwich Mean Time) GMT -5 hours, ie. 5 hours behind Greenwich, England. Quito is 13 to 15 hours behind Australia. (Daylight savings not taken into account.)
Israel is (Greenwich Mean Time) GMT +2 hours, ie. 2 hours ahead of Greenwich, England.
Atlanta Georgia is on Eastern time in the United States. Greenwich Mean Time is five hours ahead of US Eastern time (just like Atlanta is ahead of Houston).
Singapore is (Greenwich Mean Time) GMT +8 hours, ie. 8 hours ahead of Greenwich, England. Pakistan is (Greenwich Mean Time) GMT +5 hours, ie. 5 hours ahead of Greenwich, England. If it is 11am in Singapore, it is 8am in Pakistan. (Daylight savings not taken into account.)