Convert British Summer Time to Eastern Daylight Time (BST to EDT)

Understanding BST and EDT Time Zones

British Summer Time (BST)

British Summer Time is observed in undefined and uses the offset UTC+1. Major cities in this time zone include London, Edinburgh, Manchester. This time zone covers parts of Europe and/or Africa, home to major financial and cultural centers.

Eastern Daylight Time (EDT)

Eastern Daylight Time operates at UTC-4, covering undefined. Key cities include New York, Washington DC, Miami, Atlanta, Boston. The 5-hour backward offset from BST means that when professionals in London start their workday at 9:00 AM, it is already 4:00 AM in New York.

BST is also commonly referred to as UK summer time, London summer time, England time. EDT is also known as Eastern Daylight, Eastern Time, ET, East Coast time, New York time. So if you are searching for UK summer time to Eastern Daylight, this is the same conversion as BST to EDT.

Complete BST to EDT Conversion Table

The table below shows every two-hour increment converted from British Summer Time to Eastern Daylight Time. Business hours (9 AM – 5 PM) are highlighted for easy scheduling reference.

Times shown in 12-hour and 24-hour format. Last updated 2026-03-09.

Scheduling Between BST and EDT

International conference calls between London, Edinburgh, Manchester and New York, Washington DC, Miami, Atlanta, Boston work best when scheduled during the overlap of both regions' business hours. Rotating meeting times monthly ensures fairness across time zones.

The moderate 5-hour gap between BST and EDT means that there is a partial overlap of business hours. Teams can typically find a 3–4 hour window that works for both sides without requiring anyone to work outside normal hours.

Travel Between London and New York

Booking hotels and transportation in New York? Double-check whether listed check-in times are in EDT (local) or your departure time zone. A common mistake is arriving 5 hours early or late due to unconverted times.

Medical experts recommend allowing approximately one day of adjustment per hour of time difference. For the 5-hour shift between BST and EDT, plan for about 5 days to fully acclimate.

Daylight Saving Time Considerations

When daylight saving time is in effect, the abbreviation changes (e.g., EST becomes EDT, CET becomes CEST). Our converter handles this automatically, but being aware of which version is active helps avoid confusion.

For the BST to EDT conversion specifically: BST (UTC+1) and EDT (UTC-4) both observe DST. When both zones transition on different dates, the offset temporarily shifts by one hour for a few weeks. Always verify during March–April and October–November.

Related Time Zone Conversions

References & Resources

• TimeAndDate.com — World Time Zones
• NIST — Official US Time Standard
• IANA Time Zone Database
• Wikipedia — Time Zone Abbreviations
• WorldTimeServer — Current Times Worldwide
• Royal Observatory Greenwich

Frequently Asked Questions