BST to EST Converter

3:00 PM in London is 10:00 AM in New York for most of the year. For a week in autumn and two in spring the gap is 4 hours, because the UK and the US change their clocks on different dates.

BST and EST right now

BST to EST time chart

Each hour of the day in UK time and the same moment in Eastern Time. The gap changes during the year, so each version gets its own column.

Working hours, 9 AM–5 PMNight, 10 PM–7 AM

When the difference changes

UK and US clocks change on different dates, so the gap moves when either side changes. Changes in the coming year:

• ←Sunday, October 25, 2026UK clocks go back 1 hour at 2:00 AM. Eastern Time is then 4 hours behind UK time.
• ←Sunday, November 1, 2026US clocks go back 1 hour at 2:00 AM. Eastern Time is then 5 hours behind UK time.
• →Sunday, March 14, 2027US clocks go forward 1 hour at 2:00 AM. Eastern Time is then 4 hours behind UK time.
• →Sunday, March 28, 2027UK clocks go forward 1 hour at 1:00 AM. Eastern Time is then 5 hours behind UK time.

Standard or daylight time?

Strictly, EST is standard time. From the second Sunday in March to the first Sunday in November the clocks show EDT instead. Most people keep writing EST all year to mean the zone, and this page does the same: times follow the clocks in New York whatever the season.

BST, GMT or UK time?

BST, British Summer Time, is GMT+1. It runs from the last Sunday in March to the last Sunday in October; the rest of the year UK clocks are on GMT. This page follows London's clock whatever the season, which is what most people mean by “BST” or “UK time”. Dublin keeps the same clock as London all year.

For a time that is GMT all year, such as a timestamp, use GMT to EST instead.

Working hours that overlap

Most of the year a London workday and a New York workday share three hours: 2:00 to 5:00 PM in London, 9:00 AM to noon in New York. In the weeks when the gap is 4 hours, the overlap grows to four.

Related conversions

• PST to EST
• CST to EST
• EST to CST
• MST to EST
• Florida time zone
• All conversions
• Time difference calculator

Sources

• Wikipedia — British Summer Time
• Wikipedia — Eastern Time Zone
• GOV.UK — When do the clocks change?
• 15 U.S.C. § 260a — Advancement of time (daylight saving period)
• IANA Time Zone Database

Last checked October 21, 2026.