Does it account for Daylight Saving Time?

Yes, our converter uses the IANA timezone database, which includes all current DST rules for every timezone in the world.

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. All timezones are defined as offsets from UTC.

Can I compare multiple timezones at once?

Yes, you can add multiple cities or timezones and see the equivalent times side by side.

How many timezones are there in the world?

There are 38 distinct UTC offsets in use, ranging from UTC-12 to UTC+14. This includes half-hour (UTC+5:30 India, UTC+9:30 Australia) and 45-minute offsets (UTC+5:45 Nepal, UTC+8:45 Australia).

What is the International Date Line?

The International Date Line (IDL) runs roughly along the 180° meridian in the Pacific Ocean. When you cross it westward, you gain a day; crossing eastward, you lose a day.

Why do some timezones have 30 or 45 minute offsets?

Countries chose offsets that best matched their solar noon. India uses UTC+5:30 and Nepal uses UTC+5:45 because standard hourly offsets didn't align well with their geography.

Which country has the most timezones?

France has the most (12 timezones) due to overseas territories. Russia spans 11 timezones. The US has 6 (including Hawaii and Alaska).

BST to EST

-6h

BST

BSTSOURCE

UTC+01:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

EST

UTC-04:00☀ DST active

HH06

MM00

06:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

BST

EST

12:00 AM

7:00 PM-1

2:00 AM

9:00 PM-1

4:00 AM

11:00 PM-1

6:00 AM

1:00 AM

8:00 AM

3:00 AM

10:00 AM

5:00 AM

12:00 PM

7:00 AM

2:00 PM

9:00 AM

4:00 PM

11:00 AM

6:00 PM

1:00 PM

8:00 PM

3:00 PM

10:00 PM

5:00 PM

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

BST and EST on the World Map

The map below highlights the BST (British Summer Time) and EST (Eastern Standard Time) timezone regions across the globe.

BST Zone

→

EST 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

EST – Eastern Standard Time

UTC-05:00

Eastern Standard Time (EST) is the time zone for the eastern United States and Canada, 5 hours behind UTC.

Countries in EST

United States (Eastern)Canada (Ontario, Quebec)Mexico (Quintana Roo)PanamaJamaicaCayman IslandsHaitiBahamasTurks and CaicosColombiaPeruEcuador

Major Cities in EST

New York CityWashington D.C.MiamiTorontoPhiladelphiaAtlantaBostonMontrealDetroitCharlotteIndianapolisOttawaTampaOrlandoClevelandPittsburgh

Key Facts about EST

•EST is the most widely used time zone in the United States by population.
•The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.
•23 US states are fully or partially in the Eastern Time Zone.
•EST was established by the Standard Time Act of 1918.
•Over 47% of the US population lives in the Eastern Time Zone.

Daylight Saving:Yes – switches to EDT

Learn more about EST on Wikipedia

BST to EST Time Difference – Complete Guide

BST runs on British Summer Time (BST) at UTC+01:00. EST runs on Eastern Standard Time (EST) at UTC-05:00. That puts BST 6 hours behind EST — a difference of -6h at the current offsets.

In practice, when it is 9:00 AM in BST it is 3:00 AM in EST. Midnight in BST is 6:00 PM in EST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

BST to EST time conversion table

BST (BST)	EST (EST)	Day
12:00 AM	6:00 PM	previous day
6:00 AM	12:00 AM	same day
7:00 AM	1:00 AM	same day
8:00 AM	2:00 AM	same day
9:00 AM	3:00 AM	same day
12:00 PM	6:00 AM	same day
3:00 PM	9:00 AM	same day
5:00 PM	11:00 AM	same day
6:00 PM	12:00 PM	same day
9:00 PM	3:00 PM	same day

Why people convert BST to EST time

Scheduling a call from BST to EST: a 10:00 AM start in BST lands at 4:00 AM in EST, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both BST and EST are inside the 9-to-5 working day between 3:00 PM and 5:00 PM BST time (9:00 AM–11:00 AM EST). That is roughly 2 hours of usable overlap.
Coordinating a BST-based team with EST 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 -6h gap is not.
Block 3:00 PM–5:00 PM BST as the recurring meeting window if you work primarily from BST and need EST 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 EST (Eastern Standard Time)

Eastern Standard Time (EST) is observed during the winter months in the eastern part of North America. It covers 23 US states and parts of Canada including Ontario and Quebec. EST is the most populous time zone in the United States, home to major financial centers like New York City and global organizations headquartered in Washington D.C. During daylight saving time (March–November), clocks shift to Eastern Daylight Time (EDT, UTC-04:00). The time zone also covers parts of the Caribbean and Central America including Panama, Jamaica, and the Cayman Islands.

Best time to call between BST and EST

Both BST and EST sit inside the 9 AM – 5 PM working day between 3:00 PM–5:00 PM BST, which is 9:00 AM–11:00 AM EST. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

BST and EST overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.

BST is 6 hours behind EST (BST UTC+01:00 → EST UTC-05:00). The shared working window is 3:00 PM–5:00 PM BST. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

BST

☀ Currently in DST

Standard: UTC+00:00 · DST: UTC+01:00

Clocks fall back on Sun, Oct 25, 2026

EST

☀ Currently in DST

Standard: UTC-05:00 · DST: UTC-04:00

Clocks fall back on Sun, Nov 1, 2026

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between BST and EST?

BST (BST, UTC+01:00) is 6 hours behind EST (EST, UTC-05:00). The gap is currently -6h.

How do I convert BST time to EST time?

Add -6h to BST local time. For example, 9:00 AM in BST is 3:00 AM in EST.

What time is it in EST right now?

EST uses EST at UTC-05:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -6h offset from BST.

What is the best time to call EST from BST?

Call between 3:00 PM and 5:00 PM BST — that maps to 9:00 AM–11:00 AM EST and keeps both parties inside the working day.

Which is behind, BST or EST?

BST is 6 hours behind EST. When it is 12:00 PM in BST it is 6:00 AM in EST.

Does daylight saving time affect the BST–EST difference?

Neither zone observes daylight saving time, so the -6h offset between BST and EST is fixed all year.

Which other cities share BST's time zone?

BST also covers London, Birmingham, Manchester, Glasgow, Edinburgh, Cardiff, Belfast, Liverpool and 2 more.

Which countries use BST, BST's zone?

BST is used in United Kingdom.

Is there a day difference between BST and EST?

Not normally. The -6h gap only pushes the date over the previous day.

What is the time difference between BST and EST?

EST is -6h from BST.

What timezone is BST in?

BST operates on its local timezone.

What timezone is EST in?

EST operates on its local timezone.

Which countries use BST (British Summer Time)?

BST is used in United Kingdom.

Does BST observe daylight saving time?

Yes, BST switches to BST during summer months.

What are some interesting 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.

Which cities are in the EST timezone?

Major cities in the EST timezone include New York City, Washington D.C., Miami, Toronto, Philadelphia, Atlanta, Boston, Montreal.

What is the UTC offset for EST?

Eastern Standard Time (EST) is at UTC-05:00. During daylight saving time, it shifts to EDT.

What should I know about the EST timezone?

EST is the most widely used time zone in the United States by population. The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.