World Clocks

Time Around the World

Local Time is the time set on your computer's clock. If you live in a time zone which uses Daylight Saving Time (DST), then Local Time displays DST. Add one hour for DST in other time zones.³ See Daylight Saving Time by Country.

Greenwich Mean Time (GMT) is essentially the same as Coordinated Universal Time (UTC), and does not vary.^{2, 6} Remember that the United Kingdom uses Daylight Saving Time, so time there is GMT+1 during the Summer.

Of interest:

During World War II, United States President Franklin Delano Roosevelt instituted War Time (year-round Daylight Saving Time) on 9 February 1942.⁴

During World War II, Britain instituted British Double Summer Time (GMT+2).^{1, 8}

People's Republic of China uses one time zone (GMT+8), even though it spans five time zones (GMT+5 through GMT+9).^{5, 8}

Sources:

1. British Summer Time
2. Coordinated Universal Time
3. Daylight Saving Time
4. Daylight Saving Time - Congressional Research
5. Daylight Saving Time by Country
6. Greenwich Mean Time
7. United States Time
8. World Time Zones