UTC to BST
+1hUTC
UTCSOURCEBST
BSTGreen rows indicate typical business hours (9 AM - 5 PM)
UTC and BST on the World Map
The map below highlights the UTC (Coordinated Universal Time) and BST (British Summer Time) timezone regions across the globe.
UTC – Coordinated Universal Time
UTC+00:00Coordinated Universal Time (UTC) is the world's primary time standard, used as the basis for civil time worldwide.
- •UTC is the basis for all civil time zones worldwide.
- •The abbreviation 'UTC' is a compromise between English (CUT) and French (TUC).
- •UTC is based on atomic clocks and is accurate to within a nanosecond per day.
- •Servers and databases worldwide store timestamps in UTC to avoid timezone confusion.
- •Leap seconds are occasionally added to UTC to keep it aligned with Earth's rotation.
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.
UTC to BST Time Difference – Complete Guide
UTC runs on Coordinated Universal Time (UTC) at UTC+00:00. BST runs on British Summer Time (BST) at UTC+01:00. That puts UTC 1 hour ahead of BST — a difference of +1h at the current offsets.
In practice, when it is 9:00 AM in UTC it is 10:00 AM in BST. Midnight in UTC is 1:00 AM in BST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
UTC to BST time conversion table
| UTC (UTC) | BST (BST) | Day |
|---|---|---|
| 12:00 AM | 1:00 AM | same day |
| 6:00 AM | 7:00 AM | same day |
| 7:00 AM | 8:00 AM | same day |
| 8:00 AM | 9:00 AM | same day |
| 9:00 AM | 10:00 AM | same day |
| 12:00 PM | 1:00 PM | same day |
| 3:00 PM | 4:00 PM | same day |
| 5:00 PM | 6:00 PM | same day |
| 6:00 PM | 7:00 PM | same day |
| 9:00 PM | 10:00 PM | same day |
Why people convert UTC to BST time
- Scheduling a call from UTC to BST: a 10:00 AM start in UTC lands at 11:00 AM in BST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both UTC and BST are inside the 9-to-5 working day between 9:00 AM and 4:00 PM UTC time (10:00 AM–5:00 PM BST). That is roughly 7 hours of usable overlap.
- Coordinating a UTC-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 UTC" is unambiguous; "3 PM" across a +1h gap is not.
- Block 9:00 AM–4:00 PM UTC as the recurring meeting window if you work primarily from UTC and need BST colleagues present.
About UTC (Coordinated Universal Time)
Coordinated Universal Time (UTC) is the primary time standard by which the world regulates clocks and time. It is effectively the successor to GMT and is based on International Atomic Time with leap seconds added to keep it synchronized with Earth's rotation. UTC is used in aviation, computing, navigation, weather forecasting, and the International Space Station. Most programming languages and databases store timestamps in UTC.
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 UTC and BST
Both UTC and BST sit inside the 9 AM – 5 PM working day between 9:00 AM–4:00 PM UTC, which is 10:00 AM–5:00 PM BST. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
UTC and BST share 7 hours of working-hours overlap (9:00 AM–4:00 PM UTC), so scheduling a live meeting is straightforward.
UTC is 1 hour ahead of BST (UTC UTC+00:00 → BST UTC+01:00). The shared working window is 9:00 AM–4:00 PM UTC. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
UTC
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 UTC and BST?
UTC (UTC, UTC+00:00) is 1 hour ahead of BST (BST, UTC+01:00). The gap is currently +1h.
How do I convert UTC time to BST time?
Add +1h to UTC local time. For example, 9:00 AM in UTC is 10:00 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 +1h offset from UTC.
What is the best time to call BST from UTC?
Call between 9:00 AM and 4:00 PM UTC — that maps to 10:00 AM–5:00 PM BST and keeps both parties inside the working day.
Which is ahead, UTC or BST?
UTC is 1 hour ahead of BST. When it is 12:00 PM in UTC it is 1:00 PM in BST.
Does daylight saving time affect the UTC–BST difference?
Neither zone observes daylight saving time, so the +1h offset between UTC and BST is fixed all year.
Which other cities share UTC's time zone?
UTC also covers London, Dublin, Reykjavik, Accra, Lisbon, Dakar.
Which countries use UTC, UTC's zone?
UTC is used in Used worldwide as reference, Same zone as: UK, Ireland, Iceland, Portugal, Ghana.
Is there a day difference between UTC and BST?
Not normally. The +1h gap only pushes the date over for late-evening times.
What is the time difference between UTC and BST?
BST is +1h from UTC.
What timezone is UTC in?
UTC operates on its local timezone.
What timezone is BST in?
BST operates on its local timezone.
Which countries use UTC (Coordinated Universal Time)?
UTC is used in Used worldwide as reference, Same zone as: UK, Ireland, Iceland, Portugal, Ghana.
Does UTC observe daylight saving time?
No, UTC does not observe daylight saving time and remains at UTC+00:00 year-round.
What are some interesting facts about UTC?
UTC is the basis for all civil time zones worldwide. The abbreviation 'UTC' is a compromise between English (CUT) and French (TUC).
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 UTC, what time is it in BST?
When it is 12:00 AM (midnight) in UTC (UTC), it is +1h later in BST (BST).
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