GMT to Colombia
-5hGMT
GMTSOURCEColombia
COTGreen rows indicate typical business hours (9 AM - 5 PM)
GMT and COT on the World Map
The map below highlights the GMT (Greenwich Mean Time) and COT (Colombia 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.
COT – Colombia Time
UTC-05:00Colombia Time (COT) is the standard time for Colombia, 5 hours behind UTC.
- •Colombia does not observe daylight saving time.
- •COT is the same offset as EST (UTC-05:00).
- •Bogotá sits at 2,640m elevation, making it one of the highest capital cities.
Time Conversion Guide: GMT to Colombia
GMT runs on Greenwich Mean Time (GMT) at UTC+00:00. Colombia runs on Colombia Standard Time (COT) at UTC-05:00. That puts GMT 5 hours behind Colombia — a difference of -5h at the current offsets.
In practice, when it is 9:00 AM in GMT it is 4:00 AM in Colombia. Midnight in GMT is 7:00 PM in Colombia. Neither zone observes daylight saving time, so the offset between them stays constant all year.
GMT to Colombia time conversion table
| GMT (GMT) | Colombia (COT) | Day |
|---|---|---|
| 12:00 AM | 7:00 PM | previous day |
| 6:00 AM | 1:00 AM | same day |
| 7:00 AM | 2:00 AM | same day |
| 8:00 AM | 3:00 AM | same day |
| 9:00 AM | 4:00 AM | same day |
| 12:00 PM | 7:00 AM | same day |
| 3:00 PM | 10:00 AM | same day |
| 5:00 PM | 12:00 PM | same day |
| 6:00 PM | 1:00 PM | same day |
| 9:00 PM | 4:00 PM | same day |
Why people convert GMT to Colombia time
- Scheduling a call from GMT to Colombia: a 10:00 AM start in GMT lands at 5:00 AM in Colombia, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both GMT and Colombia are inside the 9-to-5 working day between 2:00 PM and 5:00 PM GMT time (9:00 AM–12:00 PM COT). That is roughly 3 hours of usable overlap.
- Booking travel or deliveries: tracking Colombia local time against GMT keeps pickup windows and arrival estimates honest across the -5h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM GMT" is unambiguous; "3 PM" across a -5h gap is not.
- Block 2:00 PM–5:00 PM GMT as the recurring meeting window if you work primarily from GMT and need Colombia colleagues present.
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 COT (Colombia Time)
Colombia Time (COT) is used throughout Colombia. Colombia does not observe daylight saving time. COT shares the same offset as EST (UTC-05:00). Bogotá, the capital, is one of the largest cities in South America.
Best time to call between GMT and Colombia
Both GMT and Colombia sit inside the 9 AM – 5 PM working day between 2:00 PM–5:00 PM GMT, which is 9:00 AM–12:00 PM COT. That gives roughly 3 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
GMT and Colombia overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.
GMT is 5 hours behind Colombia (GMT UTC+00:00 → COT UTC-05:00). The shared working window is 2:00 PM–5:00 PM GMT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
GMT
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
Colombia
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 Colombia?
GMT (GMT, UTC+00:00) is 5 hours behind Colombia (COT, UTC-05:00). The gap is currently -5h.
How do I convert GMT time to Colombia time?
Add -5h to GMT local time. For example, 9:00 AM in GMT is 4:00 AM in Colombia.
What time is it in Colombia right now?
Colombia uses COT at UTC-05:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -5h offset from GMT.
What is the best time to call Colombia from GMT?
Call between 2:00 PM and 5:00 PM GMT — that maps to 9:00 AM–12:00 PM COT and keeps both parties inside the working day.
Which is behind, GMT or Colombia?
GMT is 5 hours behind Colombia. When it is 12:00 PM in GMT it is 7:00 AM in Colombia.
Do GMT and Colombia use different time zones?
GMT uses GMT at UTC+00:00, while Colombia (Colombia) uses COT at UTC-05:00. The IANA identifiers are Europe/London and America/Bogota.
Does daylight saving time affect the GMT–Colombia difference?
Neither zone observes daylight saving time, so the -5h offset between GMT and Colombia is fixed all year.
Which other cities share GMT's time zone?
GMT also covers London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar and 5 more.
Which countries use GMT, GMT's zone?
GMT is used in United Kingdom, Ireland, Iceland, Portugal (mainland), Ghana, Senegal, Mali, Mauritania and 7 more.
Is there a day difference between GMT and Colombia?
Not normally. The -5h gap only pushes the date over the previous day.
What is the time difference between GMT and Colombia?
Colombia is -5h from GMT.
What timezone is GMT in?
GMT operates on its local timezone.
What timezone is Colombia in?
Colombia 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 COT timezone?
Major cities in the COT timezone include Bogotá, Medellín, Cali, Barranquilla, Cartagena.
What is the UTC offset for COT?
Colombia Time (COT) is at UTC-05:00.
What should I know about the COT timezone?
Colombia does not observe daylight saving time. COT is the same offset as EST (UTC-05:00).
When is it midnight in GMT, what time is it in Colombia?
When it is 12:00 AM (midnight) in GMT (GMT), it is -5h later in Colombia (COT).
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