Time zone · Africa
GMT
Greenwich Mean Time
Greenwich Mean Time (GMT) is the baseline from which every other timezone on the planet is measured, and most of its member zones in West Africa keep things refreshingly simple: no daylight saving adjustments and no clocks to change. Only a handful of European members shift with the seasons, but 16 of the 22 zones in this stable UTC+00:00 — covering Ivory Coast, Ghana, Mali, Gambia, Guinea-Bissau, Guinea, Senegal, and Sierra Leone, among others — stay on GMT year-round, making scheduling across lines straightforward.
Sunday, August 30, 2026
Current offset
UTC+00:00
Standard · GMT
Daylight saving
Not active
Year-round standard time
IANA zones
22
6 observe DST, 16 don't
DST offset
UTC+01:00
IST · +1h
About GMT
Standard time, with a summer shift.
Greenwich Mean Time (GMT) is the baseline from which every other timezone on the planet is measured, and most of its member zones in West Africa keep things refreshingly simple: no daylight saving adjustments and no clocks to change. Only a handful of European members shift with the seasons, but 16 of the 22 zones in this stable UTC+00:00 — covering Ivory Coast, Ghana, Mali, Gambia, Guinea-Bissau, Guinea, Senegal, and Sierra Leone, among others — stay on GMT year-round, making scheduling across lines straightforward.
IANA zones · the technical identifiers
The 22 zones that resolve to GMT.
For software, always store the IANA identifier — never the abbreviation alone. The database keeps these zones distinct because their rules can, and historically did, diverge.
Cities across GMT
Local time, city by city.
37 cities
Where GMT is used
22 countries.
Same offset · UTC+00:00
Other zones at UTC+00:00 right now.
These named zones share GMT's offset today. When daylight saving rules differ, they drift apart for part of the year.
Convert
GMT to the world's clocks.
Frequently asked questions
Common questions about GMT, daylight saving, and how to handle it in software. Can't find what you need? Email [email protected].
- Why does GMT have so few DST-observing zones?
- Only 6 of GMT's 22 member zones observe daylight saving, mostly European territories; the majority in West Africa don't observe DST at all.
- Which countries share the same time as GMT year-round?
- Africa/Abidjan, Africa/Accra, Africa/Bamako, Africa/Banjul, Africa/Bissau, Africa/Conakry, Africa/Dakar, and Africa/Freetown are all currently on UTC+00:00.
- What is the significance of this region?
- GMT is the reference point for all global timekeeping; historically, the Prime Meridian passes through Greenwich, England, and it's where Coordinated Universal Time (UTC) is anchored.
- Are any GMT member zones currently observing DST?
- Yes, 6 member zones are currently in DST, though the majority of West African members remain on standard time.
- What makes living in a non-DST timezone easier?
- Scheduling across borders is simplified when clocks never shift. Flights, meetings, and broadcasts need no seasonal adjustment, reducing confusion between regions.
- Can you give an example of a non-DST country in GMT?
- Ivory Coast (Africa/Abidjan) is a year-round UTC+00:00 standard, with no daylight saving transitions. It has maintained this offset consistently since 1912.
Free · Developer API
Time, as JSON.
Every IANA time zone with live offsets, DST status, and the countries and cities that use them — clean, dependable JSON. Sign up free and get an API key in seconds.
countries, cities, convert, DST transitions coming next.
Get your free API key →