London to Colombia
-6hLondon
BSTSOURCEColombia
COTGreen rows indicate typical business hours (9 AM - 5 PM)
BST and COT on the World Map
The map below highlights the BST (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.
About London
WikipediaLondon, where Greenwich Mean Time (GMT) originates, is the world's leading financial center alongside New York. The city bridges European and American business hours.
Big Ben is actually the name of the bell inside the Elizabeth Tower, not the tower itself.
London vs Colombia: Offsets, DST and Best Call Times
London runs on British Summer Time (BST) at UTC+01:00, currently observing daylight saving time. Colombia runs on Colombia Standard Time (COT) at UTC-05:00. That puts London 6 hours behind Colombia — a difference of -6h at the current offsets.
In practice, when it is 9:00 AM in London it is 3:00 AM in Colombia. Midnight in London is 6:00 PM in Colombia.London observes daylight saving time while Colombia does not, so the gap narrows or widens by an hour part of the year.
London to Colombia time conversion table
| London (BST) | Colombia (COT) | Day |
|---|---|---|
| 12:00 AM | 6:00 PM | previous day |
| 6:00 AM | 12:00 AM | same day |
| 7:00 AM | 1:00 AM | same day |
| 8:00 AM | 2:00 AM | same day |
| 9:00 AM | 3:00 AM | same day |
| 12:00 PM | 6:00 AM | same day |
| 3:00 PM | 9:00 AM | same day |
| 5:00 PM | 11:00 AM | same day |
| 6:00 PM | 12:00 PM | same day |
| 9:00 PM | 3:00 PM | same day |
Why people convert London to Colombia time
- Scheduling a call from London to Colombia: a 10:00 AM start in London lands at 4:00 AM in Colombia, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both London and Colombia are inside the 9-to-5 working day between 3:00 PM and 5:00 PM BST time (9:00 AM–11:00 AM COT). That is roughly 2 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in London is 2:00 PM in Colombia makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM BST" is unambiguous; "3 PM" across a -6h gap is not.
- Block 3:00 PM–5:00 PM BST as the recurring meeting window if you work primarily from London and need Colombia colleagues present.
- London: Clocks fall back on Sun, Oct 25, 2026. Re-check this page after that date because the offset changes and so does the -6h gap.
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 London and Colombia
Both London and Colombia sit inside the 9 AM – 5 PM working day between 3:00 PM–5:00 PM BST, which is 9:00 AM–11:00 AM COT. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
London and Colombia overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.
London is 6 hours behind Colombia (BST UTC+01:00 → COT UTC-05:00). The shared working window is 3:00 PM–5:00 PM BST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
London
☀ 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 London and Colombia?
London (BST, UTC+01:00) is 6 hours behind Colombia (COT, UTC-05:00). The gap is currently -6h.
How do I convert London time to Colombia time?
Add -6h to London local time. For example, 9:00 AM in London is 3:00 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 -6h offset from London.
What is the best time to call Colombia from London?
Call between 3:00 PM and 5:00 PM BST — that maps to 9:00 AM–11:00 AM COT and keeps both parties inside the working day.
Which is behind, London or Colombia?
London is 6 hours behind Colombia. When it is 12:00 PM in London it is 6:00 AM in Colombia.
Do London and Colombia use different time zones?
London (UK) uses BST at UTC+01:00, while Colombia (Colombia) uses COT at UTC-05:00. The IANA identifiers are Europe/London and America/Bogota.
Does daylight saving time affect the London–Colombia difference?
Yes at the moment: London is on daylight saving time and Colombia is not, so the -6h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share London's time zone?
BST also covers London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar and 5 more.
Which countries use BST, London's zone?
BST is used in United Kingdom, Ireland, Iceland, Portugal (mainland), Ghana, Senegal, Mali, Mauritania and 7 more.
Is there a day difference between London and Colombia?
Not normally. The -6h gap only pushes the date over the previous day.
What is the time difference between London and Colombia?
Colombia is -6h from London.
What timezone is London in?
London, where Greenwich Mean Time (GMT) originates, is the world's leading financial center alongside New York. The city bridges European and American business hours.
What timezone is Colombia in?
Colombia operates on its local timezone.
What are the business hours in London?
Standard business hours in London are 9:00 AM - 5:00 PM GMT.
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 London, what time is it in Colombia?
When it is 12:00 AM (midnight) in London (GMT), it is -6h later in Colombia (COT).
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