Where and When is GMT Observed?

Europe

European countries/territories using GMT all year:

  • Greenland (Danmarkshavn)
  • Iceland

European countries/territories using GMT in the winter and IST or BST in the summer:

  • Guernsey
  • Ireland
  • Isle of Man
  • Jersey
  • United Kingdom - main islands Show

    England, Wales, Scotland, Northern Ireland

Africa

African countries using GMT all year:

  • Burkina Faso
  • Cote d'Ivoire (Ivory Coast)
  • Gambia
  • Ghana
  • Guinea
  • Guinea-Bissau
  • Liberia
  • Mali
  • Mauritania
  • Saint Helena
  • Sao Tome and Principe
  • Senegal
  • Sierra Leone
  • Togo

North America

Areas of Greenland using GMT all year:

  • Danmarkshavn

Antarctica

Locations in Antarctica using GMT in the summer and CEST in the winter:

  • Troll Station

Other Time Zones in UTC +0

Some time zones exist that have the same offset as GMT, but can be found under a different name:

  • AZOST – Azores Summer Time
  • EGST – Eastern Greenland Summer Time
  • WET – Western European Time
  • WT – Western Sahara Standard Time
  • Z – Zulu Time Zone

GMT time now

9:21:31 am

Monday, September 1, 2025

Did you mean IST or BST?

  • GMT is currently observed in Reykjavik
  • GMT will be observed in London starting from Oct 26, 2025 at 2:00 am
  • GMT is currently observed in Reykjavik
  • GMT will be observed in Troll Station starting from Oct 26, 2025 at 3:00 am
  • UTC Offset: UTC +0
  • 4 hours ahead of Toronto
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Example cities

United Kingdom – London (Winter)
Iceland – Reykjavik (All Year)
Sierra Leone – Freetown (All Year)
Greenland – Danmarkshavn (All Year)
Antarctica – Troll Station (Summer)

Related time zones

IST – Irish Standard Time (Daylight Time)
BST – British Summer Time (Daylight Time)

Time Zone Map with DST

Time zone map

Time Zone Map

Time zones by continent/region

  • Africa
  • Antarctica
  • Asia
  • Atlantic
  • Australia
  • Caribbean
  • Central America
  • Europe
  • Indian Ocean
  • Military
  • North America
  • Pacific
  • South America

See all Time zone abbreviations

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