COT to BST
+6hCOT
COTSOURCEBST
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 (British Summer 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.
BST – British Summer Time
UTC+01:00British Summer Time (BST, UTC+01:00) is the daylight saving period in the United Kingdom, running from late March to late October.
- •BST runs from the last Sunday in March to the last Sunday in October.
- •BST is exactly one hour ahead of GMT, the UK's standard time.
- •During BST, London is 4 hours ahead of New York while the US is on Eastern Daylight Time.
- •The Isle of Man and the Channel Islands also observe BST.
Comparing Time Zones: COT and BST
COT runs on Colombia Time (COT) at UTC-05:00. BST runs on British Summer Time (BST) at UTC+01:00. That puts COT 6 hours ahead of BST — a difference of +6h at the current offsets.
In practice, when it is 9:00 AM in COT it is 3:00 PM in BST. Midnight in COT is 6:00 AM in BST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
COT to BST time conversion table
| COT (COT) | BST (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 BST time
- Scheduling a call from COT to BST: a 10:00 AM start in COT lands at 4:00 PM in BST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both COT and BST 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.
- Booking travel or deliveries: tracking BST local time against COT keeps pickup windows and arrival estimates honest across the +6h offset.
- 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 BST colleagues present.
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 BST (British Summer Time)
British Summer Time (BST) is the daylight saving period in the United Kingdom, when clocks move one hour forward from Greenwich Mean Time (GMT, UTC+00:00) to UTC+01:00. It runs from the last Sunday in March to the last Sunday in October. England, Scotland, Wales and Northern Ireland all follow it, along with the Isle of Man and the Channel Islands of Jersey and Guernsey. During BST, London is one hour ahead of UTC, four hours ahead of New York on Eastern Daylight Time, and five hours ahead of New York once the United States returns to Eastern Standard Time in November. BST is also used to abbreviate Bangladesh Standard Time (UTC+06:00), which is listed separately on this site.
Best time to call between COT and BST
Both COT and BST 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 BST 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 BST (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
BST
☀ 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 BST?
COT (COT, UTC-05:00) is 6 hours ahead of BST (BST, UTC+01:00). The gap is currently +6h.
How do I convert COT time to BST time?
Add +6h to COT local time. For example, 9:00 AM in COT is 3:00 PM in BST.
What time is it in BST right now?
BST 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 BST 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 BST?
COT is 6 hours ahead of BST. When it is 12:00 PM in COT it is 6:00 PM in BST.
Does daylight saving time affect the COT–BST difference?
Neither zone observes daylight saving time, so the +6h offset between COT and BST is fixed all year.
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 BST?
Not normally. The +6h gap only pushes the date over for late-evening times.
What is the time difference between COT and BST?
BST is +6h from COT.
What timezone is COT in?
COT operates on its local timezone.
What timezone is BST in?
BST 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 BST timezone?
Major cities in the BST timezone include London, Birmingham, Manchester, Glasgow, Edinburgh, Cardiff, Belfast, Liverpool.
What is the UTC offset for BST?
British Summer Time (BST) is at UTC+01:00. During daylight saving time, it shifts to BST.
What should I know about the BST timezone?
BST runs from the last Sunday in March to the last Sunday in October. BST is exactly one hour ahead of GMT, the UK's standard time.
When is it midnight in COT, what time is it in BST?
When it is 12:00 AM (midnight) in COT (COT), it is +6h later in BST (BST).
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See every conversion from COT →·See every conversion from BST →