UTC+00:00

UTC+00:00
Time zone
World map with the time zone highlighted
UTC offset
UTC	UTC+00:00
Current time
00:09, 17 July 2024UTC+00:00[refresh]
Centralmeridian
Date-time group

UTC±00:00: blue (January), orange (July), yellow (year-round), light blue (sea areas)

Time in Europe:

Light Blue	Western European Time/Greenwich Mean Time(UTC)
Blue	Western European Time/Greenwich Mean Time(UTC)
	Western European Summer Time/British Summer Time/Irish Standard Time(UTC+1)
Red	Central European Time(UTC+1)
	Central European Summer Time(UTC+2)
Yellow	Eastern European Time/Kaliningrad Time(UTC+2)
Ochre	Eastern European Time(UTC+2)
	Eastern European Summer Time(UTC+3)
Green	Moscow Time/Turkey Time(UTC+3)
Turquoise	Armenia Time/Azerbaijan Time/Georgia Time/Samara Time(UTC+4)

▉▉▉▉Pale colours: Standard time observed all year
▉▉▉Dark colours:Summer timeobserved

Time zones of Africa:

Light Blue	Cape Verde Time[a](UTC−1)
Blue	Greenwich Mean Time(UTC)
Red	Central European Time West Africa Time (UTC+1)
Ochre	Central Africa Time Eastern European Time Egypt Standard Time South African Standard Time (UTC+2)
Green	East Africa Time(UTC+3)
Turquoise	Mauritius Time[b] Seychelles Time[b] (UTC+4)

^aThe islands ofCape Verdeare to the west of the African mainland.
^bMauritiusand theSeychellesare to the east and north-east of Madagascar respectively.

UTC+00:00is an identifier for atime offset from UTCof +00:00. This time zone is the basis ofCoordinated Universal Time(UTC) and all other time zones are based on it. InISO 8601,an example of the associated time would be written as 2069-01-01T12:12:34+00:00. It is also known by the following geographical or historical names:

• Greenwich Mean Time
• Western European Time
• Azores Summer Time
• Eastern Greenland Summer Time
• Western Sahara Standard Time
• Coordinated Universal Time

As standard time (Northern Hemisphere winter)

Main article:Western European Time

Principal cities:London,Birmingham,Manchester,Edinburgh,Liverpool,Bristol,Belfast,Glasgow,Cardiff,Dublin,Limerick,Las Palmas de Gran Canaria,Santa Cruz de Tenerife,Lisbon,Porto

Europe

Western Europe

• Ireland (Irish Standard Time is UTC+01:00, see explanation below)
• Portugal (WET)
• United Kingdom and the adjacentCrown Dependencies(Channel Islandsand theIsle of Man) (GMT)
  • (England,Wales,ScotlandandNorthern Ireland)
• Faroe Islands(WET)

Atlantic islands

• Portugal
  • Madeira(WET)
• Spain
  • Canary Islands(WET)

Notes:

1. The westernmost point where UTC with DST is applied isEl Hierro,Canary Islands,Spain (18°00′ W). Time used there is 2 hours and 12 minutes ahead of physical time in the summer, making for the greatest discrepancy in the UTC time zone.
2. The easternmost settlement where UTC with DST is applied isLowestoftinSuffolk,East Anglia,UK (at just 1°45′ E).
3. Morocco normally observesUTC+01:00,but the clock is set back one hour duringRamadan.SeeTime in Moroccofor further information.
4. Whilstde factoIreland operates on the same time as the United Kingdom, itsde jurebasis to do so differs. Whereas standard time in the UK is GMT in winter andBST(daylight saving time) in summer,Irish Standard Time(UTC+01:00) is observed in summer and GMT is used in winter. For details, see below.

As daylight saving time (Northern Hemisphere summer)

Europe

Arctic Ocean

• Greenland
  • Ittoqqortoormiitand surrounding area
• Portugal
  • Azoresislands

As standard time (year-round)

Principal cities:Reykjavík,Accra,Bamako,Dakar,Abidjan,Conakry,Ouagadougou,São Tomé,Bissau,Monrovia,Bamako,Nouakchott,Freetown,Lomé,El Aaiún (Laayoune),Tifariti,Tindouf

Africa

West Africa

Greenwich Mean Time

• Burkina Faso
• Ivory Coast
• The Gambia
• Ghana
• Guinea
• Guinea-Bissau
• Liberia
• Mali
• Mauritania
• Sahrawi Arab Democratic Republic(disputed territory)
• São Tomé and Príncipe (since 2018)
• Senegal
• Sierra Leone
• Togo

Europe (and possessions)

Atlantic islands

• Greenland
  • Danmarkshavnand surrounding area
• Iceland
• United Kingdom
  • Saint Helena, Ascension and Tristan da Cunha
    • Saint Helena
    • Ascension Island
    • Tristan da Cunha

Antarctica

Some bases inAntarctica.

See also:Time in Antarctica

• Norway
  • Troll Station

Notes:

1. The westernmost point where UTC with no DST is applied isBjargtangar,at the northwest peninsula ofIceland(24°32′ W). Time used there is 1 hour and 38 minutes ahead of physical time. This is the greatest deviation from physical time for UTC+00:00 with no DST.

Discrepancies between use of UTC+00:00 as standard time rather than local solar time

Colour	Legal time vs local mean time
	1 h ± 30 m behind
	0 h ± 30 m
	1 h ± 30 m ahead
	2 h ± 30 m ahead
	3 h ± 30 m ahead

European winter

European summer

Since legal, political, social and economic criteria, in addition to physical or geographical criteria, are used in the drawing of time zones, actual time zones do not precisely adhere to meridian lines. The UTC+00:00 time zone, were it determined purely bylongitude,would consist of the area between meridians 7°30′W and 7°30′E. However, in much of Western and Central Europe, despite lying between those two meridians, UTC+01:00 is used; similarly, there are European areas that use UTC, even though their physical time zone isUTC−01:00(e.g. most of Portugal), orUTC−02:00(the westernmost part of Iceland). Because the UTC+00:00 time zone in Europe is at its western edge,Lowestoftin the United Kingdom, at only 1°45′E, is the easternmost settlement in Europe in which UTC+00:00 is applied.

Countries and areas west of 22°30′W ( "physical" UTC−02:00) that use UTC+00:00

• The westernmost part of Iceland, including the northwestpeninsula(the Westfjords) and its main town ofÍsafjörður,which is west of 22°30′W, uses UTC+00:00.Bjargtangar,Iceland is the westernmost point in which UTC is applied.

Countries and areas west of 7°30′W ( "physical" UTC−01:00) that use UTC+00:00

In Europe

• Canary Islands(Spain)
• Most of Portugal, includingLisbon,Porto,Braga,Aveiro,andCoimbra.(Only the easternmost part, including cities such asBragançaandGuarda,lies east of 7°30′W.)Madeira,at 17°W even further west, also employs UTC+00:00.
• The western half of Ireland, including the cities ofCork,Limerick,andGalway
• Westernmost tip ofNorthern Ireland,including the county town ofCounty Fermanagh,Enniskillen
• Extreme westerly portion of theOuter Hebrides,in the west ofScotland;for instance,Vatersay,an inhabited island and the westernmost settlement ofGreat Britain,lies at 7°54′W. Ifuninhabited islandsor rocks are taken into accountSt Kilda,west of the Outer Hebrides, at 8°58′W, andRockall,at 13°41′W, should be included.
• Westernmost island of theFaroe Islands(autonomous region of Denmark),Mykines
• Most of Iceland, includingReykjavík
• Northeastern part ofGreenland,includingDanmarkshavn

In Africa

• Liberia
• Sierra Leone
• Guinea
• Guinea-Bissau
• Senegal
• The Gambia
• Sahrawi Arab Democratic Republic(disputed territory)
• Most of Mauritania
• Southwesternmost part of Mali
• The very westernmost part of Ivory Coast

This arch that stretches over a highway indicates theIERS Reference Meridian(0°) in Spain.

Countries that use UTC+01:00 as the basis for standard time although local solar time would suggest UTC+00:00

Countries between meridians 7°30′W and 7°30′E ( "physical" UTC+00:00) that use UTC+01:00

Further information:UTC+01:00

In Europe

• Spain (except for the Canary Islands, which use UTC+00:00). Much ofGalicia(and far western fringes ofExtremaduraandAndalusia) lie west of 7°30′W ( "physical" UTC−01:00), whereas there is no Spanish territory that even approaches 7°30′E (the boundary of "physical" UTC+01:00). Spain's time is the direct result ofGeneralissimo Franco's presidential order (published inBoletín Oficial del Estadoof 8 March 1940)abandoning Greenwich Mean Time and advancing clocks one hour, effective from 23:00 on 16 March 1940. This is an excellent example of political criteria used in the drawing of time zones: the time change was passed "in consideration of the convenience from the national time marching in step according to that of other European countries".The presidential order (most likely enacted to be in synchrony withNazi GermanyandFascist Italy,with which theFranco regimewas unofficially allied) included in its 5th article a provision for its future phase out,which never took place. Due to this political decision, Spain is two hours ahead of itslocal mean timeduring the summer, one hour ahead in winter.
• Andorra
• Belgium
• Most of France, including the cities ofParis,MarseilleandLyon.Only small parts ofAlsace,LorraineandProvenceare east of 7°30′E ( "physical" UTC+1).
• Ireland (Irish Standard Timeis used in summer,GMT in winter:this is the reverse of the usual convention, but provides the same end results. SeeTime in the Republic of Ireland).
• Luxembourg
• Monaco
• Netherlands
• Gibraltar(United Kingdom)
• The very westernmost part of Germany
• Westernmost part of Switzerland
• The very northwesternmost part of Italy
• Bouvet Islandand southwesternmost part of Norway

In Africa

• Benin
• AnnobónIsland (Equatorial Guinea)
• Western part of Niger
• Western part of Nigeria, includingLagos
• Most of Algeria, includingAlgiers
• Northeastern part of Morocco. Morocco normally uses UTC+01:00 but, in 2019, the country adopted UTC+00:00 during the month ofRamadan.

See also

• Coordinated Universal Time(UTC), the basis for the world's civil time.

External links

• Media related toUTC±00:00at Wikimedia Commons