UTC±00:00

• Coordinated Universal Time, the basis for the world's civil time.
• Greenwich Mean Time
• Western European Time
• Azores Summer Time
• Eastern Greenland Summer Time
• Western Sahara Standard Time
• Zulu Time Zone

  As standard time (Northern Hemisphere winter)

Europe

• Atlantic islands

• * Madeira
• * Canary Islands

1. The westernmost point where UTC with DST is applied is El Hierro, Canary Islands, Spain. 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 is Lowestoft in Suffolk, East Anglia, UK.
3. Note that Ireland uses the term "standard time" in reference to the summer months and "winter time" during what the rest of the time zone calls "standard time". This is the reverse of the practice of most countries in the EU, but provides the same end results.

   As daylight saving time (Northern Hemisphere summer)

• *Ittoqqortoormiit and surrounding area
• *Azores islands

  As standard time (all year round)

West Africa

• Atlantic islands

• *Danmarkshavn and surrounding area
• *Saint Helena, Ascension and Tristan da Cunha

  Antarctica

• Some bases in Antarctica. See also Time in Antarctica

1. The westernmost point where UTC with no DST is applied is Bjargtangar, at the northwest peninsula of Iceland. 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.