Who runs on UTC+0 all year?
Iceland does. So do Ghana, Senegal, and a dozen other West African nations. Their clocks read the same in January as in July. No offset. No spring-forward. No fall-back.
That sounds simple, but the list gets tricky fast. The United Kingdom sits on UTC+0 for only part of the year. From late March to late October, London moves to British Summer Time, an hour ahead. Call a colleague in Reykjavík at 10:00 UTC any day of the year and you are safe. Call someone in London at 10:00 UTC in July and you have already missed an hour of their morning.
Countries on UTC+0 year-round
These places never touch their clocks. The offset stays zero.
Africa
| Country | Region | Notes |
|---|---|---|
| Ghana | West Africa | No clock change |
| Senegal | West Africa | No clock change |
| Mali | West Africa | No clock change |
| Ivory Coast | West Africa | No clock change |
| Burkina Faso | West Africa | No clock change |
| Gambia | West Africa | No clock change |
| Guinea | West Africa | No clock change |
| Guinea-Bissau | West Africa | No clock change |
| Mauritania | West Africa | No clock change |
| Sierra Leone | West Africa | No clock change |
| Togo | West Africa | No clock change |
| Liberia | West Africa | No clock change |
| São Tomé and Príncipe | Central Africa | No clock change |
| Saint Helena, Ascension and Tristan da Cunha | South Atlantic | British Overseas Territory; no clock change |
Europe
| Country | Region | Notes |
|---|---|---|
| Iceland | Northern Europe | Year-round UTC+0 |
Atlantic
| Territory | Sovereignty | Notes |
|---|---|---|
| Greenland (Danmarkshavn area) | Denmark | Small northeastern zone stays on UTC+0 |
Places that use UTC+0 only in winter
These territories treat UTC+0 as standard time, then jump to UTC+1 for daylight saving.
- United Kingdom: GMT (UTC+0) runs from late October to late March. British Summer Time (UTC+1) covers late March to late October. London equals UTC only in winter.
- Ireland: Same pattern as the UK. Standard time is UTC+0, summer time is UTC+1.
- Portugal (mainland and Madeira): UTC+0 in winter, UTC+1 in summer. The Azores sit at UTC-1.
- Canary Islands (Spain): UTC+0 in winter, UTC+1 in summer. Mainland Spain stays on UTC+1 all year.
- Faroe Islands: UTC+0 in winter, UTC+1 in summer.
Using UTC versus being on UTC+0
UTC is a timescale. It never shifts. The IANA zone identifier is Etc/UTC.
A country that sets its civil time to UTC+0 has made a policy choice. Iceland locked that choice in decades ago. The UK uses it as a winter baseline and discards it for half the year. When someone says "I am on UTC time," ask a two-word follow-up: "All year?" The answer determines whether your 09:00 meeting holds steady or drifts by an hour come summer.
Why so few countries stick with UTC
Solar convenience drives most zone decisions. Noon should land near the sun's high point. A country at 30° east longitude gets solar noon around 12:00 UTC, but local noon works better at UTC+2.
The prime meridian at 0° longitude cuts through West Africa, the British Isles, Iceland, and western Europe. Those are the natural UTC+0 candidates. Yet many of them still choose seasonal offsets to push daylight into evening hours. Ghana and Iceland do not bother.
Full list of UTC+0 territories
Year-round UTC+0
- Ghana
- Senegal
- Mali
- Ivory Coast
- Burkina Faso
- Gambia
- Guinea
- Guinea-Bissau
- Mauritania
- Sierra Leone
- Togo
- Liberia
- São Tomé and Príncipe
- Iceland
- Saint Helena, Ascension and Tristan da Cunha
- Greenland (Danmarkshavn area)
Winter-only UTC+0
- United Kingdom (GMT in winter, BST in summer)
- Ireland
- Portugal (mainland and Madeira)
- Faroe Islands
- Canary Islands