UTC ± 0

UTC ± 0
Zone meridian		0 °
NATO DTG		Z (Zulu)
Time zones	Western European Time (GMT) Greenwich Mean Time (GMT) Azores Daylight Time (AZODT) Ireland Standard Time (IST) Eastern Greenland Summer Time (EGST) Sierra Leone Time (SLT) Universal Coordinated Time (UTC)

The zone time UTC ± 0 notes that there is no time difference to the coordinated universal time UTC. The reference meridian is the prime meridian , the semicircle of length is 0 °. On watches with this zone time, it is one hour earlier than CET and the same time as GMT , GMT & UTC.

It is used as standard time for the time zones Western European Time ( GMT or international English WET , Western European Time ). In Great Britain and West Africa the time is still referred to as Greenwich Mean Time (GMT). It also applies to various summer times .

The current UTC is 12:16

Update time

Western European Time / Greenwich Mean Time

UTC + 0:

South Summer / North Standard Time Sea area

North Summer / South Standard Time Standard time all year round

Hypothetical time zones in Europe if the principle that a country uses the time zone in which most of the country is located were consistently applied. Legend as in the map below. Portugal and Ireland could even use the Azorean time. The Kaliningrad Oblast was considered separately and added to the CET

European time zones :

violet	Azores ( UTC − 1 ) Azores, daylight saving time ( UTC ± 0 )
Light Blue	Western European Time ( UTC ± 0 )
blue	Western European Time ( UTC ± 0 ) Western European Summer Time ( UTC + 1 )
red	Central European Time ( UTC + 1 ) Central European Summer Time ( UTC + 2 )
yellow	Kaliningrad time ( UTC + 2 )
ocher	Eastern European Time ( UTC + 2 ) Eastern European Summer Time ( UTC + 3 )
light green	Moscow time ( UTC + 3 )

The following countries and regions use the GMT or GMT (from north to south)

• all year round in the North Atlantic:
  • Danmarkshavn (Kong Frederik VIII Land), Greenland / Denmark
  •  Iceland , since 1968

    Both are about 15 ° –25 ° West, so they have a time difference of over an hour in relation to local time, but this has little effect in winter due to the proximity to the Arctic Circle ( polar night ), whereas in summer it has the same effect as a summer time

• as standard time ( Western European Summer Time (WEST / WEST) applies as summer time : UTC + 1 )
  •  Faroe Islands belonged to the Kgr. Denmark , since 1908 
  •  United Kingdom : officially Greenwich Mean Time GMT since 1847, Northern Ireland since 1922, including Isle of Man , Guernsey and Jersey ; Summer time British Summer Time (BST) or Greenwich Daylight Savings Time (GDT)    
  •  Ireland : officially Greenwich Mean Time GMT since 1922, summer time there Irish Standard Time (IST) or Am Caighdeánach na hÉireann (ACÉ)

    both 1968–1971 British Summer Time / Irish Standard Time all year round, 1940–45 / 47 IST as normal time, British Double Summer Time (BDST) GMT + 2 as summer time

  •  Portugal - continental and Madeira ; excluding the Azores ( Azores Standard Time AZOST, UTC-1), but their summer time (see below ) - since 1911, 1966–1976 and 1992–1996 continental Central European Time
  •  Canary Islands , part of Spain , since 1946 
  •  Western Sahara
• For the South Atlantic, standard time applies all year round:
  •  St. Helena, Ascension and Tristan da Cunha St. Helena, Ascension and Tristan da Cunha , British Overseas Territory: Ascension , St. Helena , Tristan da Cunha , Gough Island
  • Bouvet Island (Norway)

Greenwich Mean Time / Temps Moyen de Greenwich in Africa

The following countries in West Africa use GMT:

•  Burkina Faso
•  Ivory Coast
•  Ghana
•  Guinea
•  Gambia
•  Guinea-Bissau
•  Liberia
•  Mali
•  Mauritania
•  Sao Tome and Principe
•  Senegal
•  Sierra Leone
•  Togo

Summertime

• Ittoqqortoormiit / Kong Christian IX Land, Greenland / Denmark: follows the EU summer time rules 
• Azores , Portugal : Azores Daysaving Time (AZODT), follows EU summer time rules 

Historical use

• From March 11, 1911 until the German occupation in 1940, France also used and maintained Western European Time
• on December 15, 1918 also in the German area on the left bank of the Rhine he occupied, and on January 1, 1919 in the area occupied on the right bank of the Rhine (bridgeheads Mainz and Koblenz ). At least in railway operations, the area on the left bank of the Rhine that was still occupied was given up on February 1, 1925 and Central European Time was reintroduced.

Individual evidence

1. ^ AK Galloway: The Summer Time Order 2002 . In: Her Majesty's Stationery Office (ed.): Statutory Instrument 2002 . No. 262 . Buckingham Palace, London 2002, ISBN 0-11-039331-7 ( legislation.gov.uk [PDF; accessed June 6, 2016]).
2. ↑ This is based on the Standard Time Act 1968 (introduction of the WET) Standard Time (Amendment) Act 1971 (abolition of the original standard time / winter time), so that the name 'Standard Time' today denotes daylight saving time. Irish Standard Time Act, 1968. irishstatutebook.ie, accessed 2009 . Standard Time (Amendment) Act, 1971. irishstatutebook.ie, accessed 2009 .   
3. ↑ Prussian and Hessian Railway Directorate in Mainz (ed.): Official Gazette of the Prussian and Hessian Railway Directorate in Mainz from December 11, 1918, No. 65. Announcement No. 857, p. 403.
4. ↑ Prussian and Hessian Railway Directorate in Mainz (ed.): Official Gazette of the Prussian and Hessian Railway Directorate in Mainz of January 4, 1919, No. 1. Announcement No. 11, p. 5.
5. ↑ Reichsbahndirektion in Mainz (ed.): Official Gazette of the Reichsbahndirektion in Mainz of January 24, 1925, No. 7. Announcement No. 119, p. 89f.