COT to United Kingdom
+6hCOT
COTSOURCEUnited Kingdom
BSTGreen rows indicate typical business hours (9 AM - 5 PM)
COT and BST on the World Map
The map below highlights the COT (Colombia Time) and BST (Greenwich Mean Time) timezone regions across the globe.
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.
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.
Understanding the +6h Gap: COT vs United Kingdom
COT runs on Colombia Time (COT) at UTC-05:00. United Kingdom runs on British Summer Time (BST) at UTC+01:00, also currently on daylight saving time. That puts COT 6 hours ahead of United Kingdom — a difference of +6h at the current offsets.
In practice, when it is 9:00 AM in COT it is 3:00 PM in United Kingdom. Midnight in COT is 6:00 AM in United Kingdom.United Kingdom observes daylight saving time while COT does not, so the gap narrows or widens by an hour part of the year.
COT to United Kingdom time conversion table
| COT (COT) | United Kingdom (BST) | Day |
|---|---|---|
| 12:00 AM | 6:00 AM | same day |
| 6:00 AM | 12:00 PM | same day |
| 7:00 AM | 1:00 PM | same day |
| 8:00 AM | 2:00 PM | same day |
| 9:00 AM | 3:00 PM | same day |
| 12:00 PM | 6:00 PM | same day |
| 3:00 PM | 9:00 PM | same day |
| 5:00 PM | 11:00 PM | same day |
| 6:00 PM | 12:00 AM | next day |
| 9:00 PM | 3:00 AM | next day |
Why people convert COT to United Kingdom time
- Scheduling a call from COT to United Kingdom: a 10:00 AM start in COT lands at 4:00 PM in United Kingdom, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both COT and United Kingdom are inside the 9-to-5 working day between 9:00 AM and 11:00 AM COT time (3:00 PM–5:00 PM BST). That is roughly 2 hours of usable overlap.
- Coordinating a COT-based team with United Kingdom contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM COT" is unambiguous; "3 PM" across a +6h gap is not.
- Block 9:00 AM–11:00 AM COT as the recurring meeting window if you work primarily from COT and need United Kingdom colleagues present.
- United Kingdom: Clocks fall back on Sun, Oct 25, 2026. Any meeting series spanning that date will shift by an hour in local time.
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.
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.
Best time to call between COT and United Kingdom
Both COT and United Kingdom sit inside the 9 AM – 5 PM working day between 9:00 AM–11:00 AM COT, which is 3:00 PM–5:00 PM BST. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
COT and United Kingdom overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.
COT is 6 hours ahead of United Kingdom (COT UTC-05:00 → BST UTC+01:00). The shared working window is 9:00 AM–11:00 AM COT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
COT
Does not observe DST
United Kingdom
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
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 COT and United Kingdom?
COT (COT, UTC-05:00) is 6 hours ahead of United Kingdom (BST, UTC+01:00). The gap is currently +6h.
How do I convert COT time to United Kingdom time?
Add +6h to COT local time. For example, 9:00 AM in COT is 3:00 PM in United Kingdom.
What time is it in United Kingdom right now?
United Kingdom uses BST at UTC+01:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +6h offset from COT.
What is the best time to call United Kingdom from COT?
Call between 9:00 AM and 11:00 AM COT — that maps to 3:00 PM–5:00 PM BST and keeps both parties inside the working day.
Which is ahead, COT or United Kingdom?
COT is 6 hours ahead of United Kingdom. When it is 12:00 PM in COT it is 6:00 PM in United Kingdom.
Do COT and United Kingdom use different time zones?
COT uses COT at UTC-05:00, while United Kingdom (United Kingdom) uses BST at UTC+01:00. The IANA identifiers are America/Bogota and Europe/London.
Does daylight saving time affect the COT–United Kingdom difference?
Yes at the moment: United Kingdom is on daylight saving time and COT is not, so the +6h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share COT's time zone?
COT also covers Bogotá, Medellín, Cali, Barranquilla, Cartagena.
Which countries use COT, COT's zone?
COT is used in Colombia.
Is there a day difference between COT and United Kingdom?
Not normally. The +6h gap only pushes the date over for late-evening times.
What is the time difference between COT and United Kingdom?
United Kingdom is +6h from COT.
What timezone is COT in?
COT operates on its local timezone.
What timezone is United Kingdom in?
United Kingdom operates on its local timezone.
Which countries use COT (Colombia Time)?
COT is used in Colombia.
Does COT observe daylight saving time?
No, COT does not observe daylight saving time and remains at UTC-05:00 year-round.
What are some interesting facts about COT?
Colombia does not observe daylight saving time. COT is the same offset as EST (UTC-05:00).
Which cities are in the GMT timezone?
Major cities in the GMT timezone include London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar.
What is the UTC offset for GMT?
Greenwich Mean Time (GMT) is at UTC+00:00. During daylight saving time, it shifts to BST.
What should I know about the GMT timezone?
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.
When is it midnight in COT, what time is it in United Kingdom?
When it is 12:00 AM (midnight) in COT (COT), it is +6h later in United Kingdom (GMT).
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