GMT

Greenwich Mean Time

GMT +0

12am

3am

6am

9am

12pm

3pm

6pm

9pm

Use this GMT Converter page to check current local time, UTC and GMT offset, daylight saving details, related time zones, and popular time converter links.

Greenwich Mean Time

Offset: GMT is 0 hours ahead Greenwich Mean Time (GMT) and is used in Europe

Countries using this time zone: 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

Principal Cities: The largest city in the GMT time zone is London in United Kingdom, with about 7.557 million people. Other major cities in this time zone include Abidjan, Dakar, Grand Dakar, Accra.

Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. 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. 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.

GMT Time Zone Geo Map — GMT timezone map

GMT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data

Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
+00 - basic short
+0000 - basic
+00:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers

+0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates the zero UTC/GMT offset.

Military/NATO: Used by the U.S. military, Chinese military and others

Zulu - Military abbreviation for GMT
Z - short form of 'Zulu'

IANA/Olson: Reflects GMT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems

Africa/Abidjan
Africa/Accra
Africa/Bamako
Africa/Banjul
Africa/Bissau
Africa/Conakry
Africa/Dakar
Africa/Freetown
Africa/Lome
Africa/Monrovia
Africa/Nouakchott
Africa/Ouagadougou
Africa/Sao_Tome
Africa/Timbuktu
America/Danmarkshavn
Atlantic/Reykjavik
Atlantic/St_Helena
Eire
Etc/GMT
Etc/GMT+0
Etc/GMT-0
Etc/GMT0
Etc/Greenwich
Europe/Belfast
Europe/Dublin
Europe/Guernsey
Europe/Isle_of_Man
Europe/Jersey
Europe/London
GB
GB-Eire
GMT
GMT+0
GMT-0
GMT0
Greenwich
Iceland

Time zones with the GMT +0 offset:

EGST - Eastern Greenland Summer Time
GMT - Greenwich Mean Time
WET - Western European Time
AZOST - Azores Summer Time
UTC - Universal Time Coordinated
WT - Western Sahara Standard Time
Z - Zulu Time Zone