London to BST
+0hLondon
BSTSOURCEBST
BSTGreen rows indicate typical business hours (9 AM - 5 PM)
BST and BST on the World Map
The map below highlights the BST (Greenwich Mean Time) and BST (British Summer 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.
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.
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.
Comparing Time Zones: London and BST
London runs on British Summer Time (BST) at UTC+01:00, currently observing daylight saving time. BST runs on British Summer Time (BST) at UTC+01:00. That puts London no time difference BST — a difference of +0h at the current offsets.
In practice, when it is 9:00 AM in London it is 9:00 AM in BST. Midnight in London is 12:00 AM in BST.London observes daylight saving time while BST does not, so the gap narrows or widens by an hour part of the year.
London to BST time conversion table
| London (BST) | BST (BST) | Day |
|---|---|---|
| 12:00 AM | 12:00 AM | same day |
| 6:00 AM | 6:00 AM | same day |
| 7:00 AM | 7:00 AM | same day |
| 8:00 AM | 8:00 AM | same day |
| 9:00 AM | 9:00 AM | same day |
| 12:00 PM | 12:00 PM | same day |
| 3:00 PM | 3:00 PM | same day |
| 5:00 PM | 5:00 PM | same day |
| 6:00 PM | 6:00 PM | same day |
| 9:00 PM | 9:00 PM | same day |
Why people convert London to BST time
- Scheduling a call from London to BST: a 10:00 AM start in London lands at 10:00 AM in BST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both London and BST are inside the 9-to-5 working day between 9:00 AM and 5:00 PM BST time (9:00 AM–5:00 PM BST). That is roughly 8 hours of usable overlap.
- Coordinating a London-based team with BST 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 BST" is unambiguous; "3 PM" across a +0h gap is not.
- Block 9:00 AM–5:00 PM BST as the recurring meeting window if you work primarily from London and need BST 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 +0h 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 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 London and BST
Both London and BST sit inside the 9 AM – 5 PM working day between 9:00 AM–5:00 PM BST, which is 9:00 AM–5:00 PM BST. That gives roughly 8 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
London and BST share 8 hours of working-hours overlap (9:00 AM–5:00 PM BST), so scheduling a live meeting is straightforward.
London is no time difference BST (BST UTC+01:00 → BST UTC+01:00). The shared working window is 9:00 AM–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
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 London and BST?
London (BST, UTC+01:00) is no time difference BST (BST, UTC+01:00). The gap is currently +0h.
How do I convert London time to BST time?
Add +0h to London local time. For example, 9:00 AM in London is 9:00 AM 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 +0h offset from London.
What is the best time to call BST from London?
Call between 9:00 AM and 5:00 PM BST — that maps to 9:00 AM–5:00 PM BST and keeps both parties inside the working day.
Which is ahead, London or BST?
London and BST are currently on the same clock.
Do London and BST use different time zones?
London (UK) uses BST at UTC+01:00, while BST uses BST at UTC+01:00. They actually share the same IANA zone.
Does daylight saving time affect the London–BST difference?
Yes at the moment: London is on daylight saving time and BST is not, so the +0h 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.
What is the time difference between London and BST?
BST is +0h 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 BST in?
BST 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 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 London, what time is it in BST?
When it is 12:00 AM (midnight) in London (GMT), it is +0h later in BST (BST).
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