Does it handle Daylight Saving Time?

Yes, the tool automatically adjusts for Daylight Saving Time based on the specific date you select, ensuring accurate conversions year-round.

Can I add multiple cities?

Yes, you can add as many cities as you need to the dashboard to compare times across your entire global network simultaneously.

BST to UTC

-1h

BST

BSTSOURCE

UTC+01:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

UTC

UTC+00:00

HH11

MM00

11:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

BST

UTC

12:00 AM

11:00 PM-1

2:00 AM

1:00 AM

4:00 AM

3:00 AM

6:00 AM

5:00 AM

8:00 AM

7:00 AM

10:00 AM

9:00 AM

12:00 PM

11:00 AM

2:00 PM

1:00 PM

4:00 PM

3:00 PM

6:00 PM

5:00 PM

8:00 PM

7:00 PM

10:00 PM

9:00 PM

Green rows indicate typical business hours (9 AM - 5 PM)

BST and UTC on the World Map

The map below highlights the BST (British Summer Time) and UTC (Coordinated Universal Time) timezone regions across the globe.

BST Zone

→

UTC Zone

Explore all world timezones interactively →

BST – British Summer Time

UTC+01:00

British Summer Time (BST, UTC+01:00) is the daylight saving period in the United Kingdom, running from late March to late October.

Countries in BST

United Kingdom

Major Cities in BST

LondonBirminghamManchesterGlasgowEdinburghCardiffBelfastLiverpoolBristolLeeds

Key Facts about BST

•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.

Daylight Saving:Yes – switches to BST

Learn more about BST on Wikipedia

UTC – Coordinated Universal Time

UTC+00:00

Coordinated Universal Time (UTC) is the world's primary time standard, used as the basis for civil time worldwide.

Countries in UTC

Used worldwide as referenceSame zone as: UK, Ireland, Iceland, Portugal, Ghana

Major Cities in UTC

LondonDublinReykjavikAccraLisbonDakar

Key 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).
•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.

Daylight Saving:No – UTC+00:00 year-round

Learn more about UTC on Wikipedia

BST to UTC Time Difference – Complete Guide

BST runs on British Summer Time (BST) at UTC+01:00. UTC runs on Coordinated Universal Time (UTC) at UTC+00:00. That puts BST 1 hour behind UTC — a difference of -1h at the current offsets.

In practice, when it is 9:00 AM in BST it is 8:00 AM in UTC. Midnight in BST is 11:00 PM in UTC. Neither zone observes daylight saving time, so the offset between them stays constant all year.

BST to UTC time conversion table

BST (BST)	UTC (UTC)	Day
12:00 AM	11:00 PM	previous day
6:00 AM	5:00 AM	same day
7:00 AM	6:00 AM	same day
8:00 AM	7:00 AM	same day
9:00 AM	8:00 AM	same day
12:00 PM	11:00 AM	same day
3:00 PM	2:00 PM	same day
5:00 PM	4:00 PM	same day
6:00 PM	5:00 PM	same day
9:00 PM	8:00 PM	same day

Why people convert BST to UTC time

Scheduling a call from BST to UTC: a 10:00 AM start in BST lands at 9:00 AM in UTC, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both BST and UTC are inside the 9-to-5 working day between 10:00 AM and 5:00 PM BST time (9:00 AM–4:00 PM UTC). That is roughly 7 hours of usable overlap.
Booking travel or deliveries: tracking UTC local time against BST keeps pickup windows and arrival estimates honest across the -1h offset.

Always state the zone abbreviation, not just the hour. "3:00 PM BST" is unambiguous; "3 PM" across a -1h gap is not.
Block 10:00 AM–5:00 PM BST as the recurring meeting window if you work primarily from BST and need UTC colleagues present.

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.

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.

Best time to call between BST and UTC

Both BST and UTC sit inside the 9 AM – 5 PM working day between 10:00 AM–5:00 PM BST, which is 9:00 AM–4:00 PM UTC. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

BST and UTC share 7 hours of working-hours overlap (10:00 AM–5:00 PM BST), so scheduling a live meeting is straightforward.

BST is 1 hour behind UTC (BST UTC+01:00 → UTC UTC+00:00). The shared working window is 10:00 AM–5:00 PM BST. Remember to re-check around daylight-saving transitions.