Current Time in GMT
Greenwich Mean Time
About GMT Greenwich Mean Time
A time standard historically based on the mean solar time at the Royal Observatory in Greenwich, London. It is often used interchangeably with Coordinated Universal Time (UTC), especially in the UK during winter. Some African countries use GMT year-round.
UTC Offset: +00:00
GMT at a glance
| Right now | 21:33 on Tuesday |
|---|---|
| UTC offset | UTC (the same as UTC) |
| Full name | Greenwich Mean Time |
| Countries | 21 |
| IANA zones | 35 |
| Offset type | Whole-hour offset |
What is GMT?
GMT is a UTC offset that is currently UTC - that's the same as UTC. Its full name is Greenwich Mean Time. Right now the local time on GMT is 21:33. Today 21 countries (including Burkina Faso, Côte d'Ivoire and Gambia) and 35 IANA database zones sit at this offset, which is why GMT is a useful shorthand even though the exact local rules differ from place to place.
How to convert GMT to UTC
For quick planning, use today's offset as a rule of thumb: 12:00 UTC = 12:00 local time, and 09:00 local time = 09:00 UTC. The live clock above is the safest reference when daylight saving or regional rules may apply.
How GMT sits in the world day
This offset is UTC itself, so local time and UTC use the same clock reading. This is a whole-hour offset, so the minutes match UTC and only the hour changes.
When to use a GMT offset page
Use this page when a schedule, server log, flight plan, or message gives only the offset GMT. If you know the real place, open the matching IANA zone or country page because daylight saving and local law can change future times.
Which countries use GMT?
GMT is used across Burkina Faso, Côte d'Ivoire, Gambia, Ghana, Greenland and Guernsey, plus 15 more. Open a country to see all of its cities and their local time.
IANA time zones in GMT
GMT maps to the IANA database zones Africa/Abidjan, Africa/Accra, Africa/Bamako, Africa/Banjul, Africa/Bissau and Africa/Conakry, among 35 in total. Each zone page shows its exact rules, including any daylight saving changes.
Examples of places on GMT
Examples in this offset set include Africa/Abidjan, Africa/Accra and Africa/Bamako. These examples are useful for recognizing the offset, but the IANA page is the better reference for exact daylight-saving rules.
💡 Tip: Comparing times? GMT is the same as UTC. Use the IANA links and country links on this page when you need the exact local rule for a real place, not just the offset.
GMT - Frequently asked questions
What is GMT?
GMT is a UTC offset currently UTC (the same as UTC). Its full name is Greenwich Mean Time.
What is the UTC offset of GMT?
GMT is UTC right now - the same as UTC.
Which countries are on GMT?
GMT is used in Burkina Faso, Côte d'Ivoire, Gambia, Ghana, Greenland and Guernsey, plus 15 more.
What time is it in GMT now?
The current time on GMT is 21:33 on Tuesday. The clock above updates every second.
How Alarm.now explains GMT
Abbreviation, offset, and IANA zones
GMT is shown as a time-zone group for Greenwich Mean Time with offset +00:00. The page links the abbreviation to the IANA zones and countries that use it, so users and search engines can distinguish a short label from an exact time-zone rule set.
When to use a specific IANA page
Use this group page for an overview of the abbreviation and offset. Use a linked IANA time-zone page when you need exact daylight-saving rules for a calendar, app, or future-date comparison.