GMT to WAT
+0hGMT
GMTSOURCEWAT
WATGreen rows indicate typical business hours (9 AM - 5 PM)
GMT and WAT on the World Map
The map below highlights the GMT (Greenwich Mean Time) and WAT (West Africa Time) timezone regions across the globe.
GMT – Greenwich Mean Time
UTC+00:00Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London. It is the same as UTC+00:00.
- •GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London.
- •The Royal Observatory in Greenwich has been the reference point for GMT since 1884.
- •GMT and UTC are often used interchangeably, but UTC is based on atomic clocks.
- •Iceland uses GMT year-round and never observes daylight saving time.
- •The UK switches from GMT to BST (British Summer Time) in late March each year.
WAT – West Africa Time
UTC+01:00West Africa Time (WAT) is the time zone for West and Central Africa, 1 hour ahead of UTC.
- •Lagos, Nigeria is the most populous city in Africa.
- •WAT is the same offset as CET (UTC+01:00).
- •Nigeria does not observe daylight saving time.
Understanding the Time Gap: GMT vs WAT
GMT (Greenwich Mean Time) operates on the Greenwich Mean Time (UTC+00:00). WAT (West Africa Time) uses West Africa Time (UTC+01:00).
The time difference between GMT and WAT is 0 minutes (+0h). When it's noon in GMT, it's 12:00 PM in WAT.
Why Convert GMT to WAT Time?
The time difference of 0 hours between GMT and WAT can significantly impact business operations and personal communication. By using this converter, you can easily find the overlapping business hours and schedule your interactions when both parties are available.
Pro Tip: If you frequently communicate with people in WAT from GMT, consider adding a dual-clock widget to your phone or computer to keep track of the 0-hour difference at a glance.
About GMT (Greenwich Mean Time)
Greenwich Mean Time (GMT) is the clock time at the Royal Observatory in Greenwich, London, which sits on the Prime Meridian (0° longitude). GMT serves as the reference point from which all other time zones are calculated. The United Kingdom uses GMT during winter months and switches to British Summer Time (BST, UTC+01:00) from late March to late October. Several West African nations use GMT year-round. GMT is often used interchangeably with UTC (Coordinated Universal Time), although technically they are different – UTC is based on atomic clocks while GMT is based on Earth's rotation.
About WAT (West Africa Time)
West Africa Time (WAT) is used across much of West and Central Africa, including Nigeria, the most populous country in Africa. WAT does not observe daylight saving time and shares the same offset as Central European Time (CET).
Best Time to Call Between GMT and WAT
If you want to reach someone in WAT during standard business hours (9 AM – 5 PM WAT), the best time to call from GMT would be:
- WAT 9:00 AM = GMT 09:00 AM
- WAT 12:00 PM = GMT 12:00 PM
- WAT 5:00 PM = GMT 05:00 PM
Business Hours Overlap
GMT and WAT have a significant business hours overlap (8 hours), making real-time collaboration easy during standard working hours.
As a final note, managing the +0h difference between GMT and WAT is simple with the right tools. Keep this page handy for all your future time conversion needs.
🕐 Daylight Saving Time Info
GMT
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
WAT
Does not observe DST
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between GMT and WAT?
WAT is +0h from GMT.
What timezone is GMT in?
GMT operates on its local timezone.
What timezone is WAT in?
WAT operates on its local timezone.
Which countries use GMT (Greenwich Mean Time)?
GMT is used in United Kingdom, Ireland, Iceland, Portugal (mainland), Ghana, Senegal, and 9 more countries.
Does GMT observe daylight saving time?
Yes, GMT switches to BST during summer months.
What are some interesting facts about GMT?
GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London. The Royal Observatory in Greenwich has been the reference point for GMT since 1884.
Which cities are in the WAT timezone?
Major cities in the WAT timezone include Lagos, Abuja, Douala, Yaoundé, Luanda, Kinshasa, Brazzaville.
What is the UTC offset for WAT?
West Africa Time (WAT) is at UTC+01:00.
What should I know about the WAT timezone?
Lagos, Nigeria is the most populous city in Africa. WAT is the same offset as CET (UTC+01:00).
When is it midnight in GMT, what time is it in WAT?
When it is 12:00 AM (midnight) in GMT (GMT), it is +0h later in WAT (WAT).
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