Zone & HourBST to EDT Time Converter
EDT is 5 hours behind of BST.
BST: British Summer Time, UTC+01:00.
EDT: Eastern Daylight Time, UTC−04:00.
For a city that changes clocks, use the date-aware city converter.
Check the abbreviation before converting
BST may refer to other regional names. This page uses British Summer Time only.
Convert a time
9:00 AM BST = 4:00 AM EDT (same day)
24-hour BST to EDT conversion table
These are fixed-offset examples. They apply whenever the two abbreviations have the exact meanings stated above.
| BST · UTC+01:00 | EDT · UTC−04:00 | Day |
|---|---|---|
| 12:00 AM | 7:00 PM | Previous day |
| 1:00 AM | 8:00 PM | Previous day |
| 2:00 AM | 9:00 PM | Previous day |
| 3:00 AM | 10:00 PM | Previous day |
| 4:00 AM | 11:00 PM | Previous day |
| 5:00 AM | 12:00 AM | Same day |
| 6:00 AM | 1:00 AM | Same day |
| 7:00 AM | 2:00 AM | Same day |
| 8:00 AM | 3:00 AM | Same day |
| 9:00 AM | 4:00 AM | Same day |
| 10:00 AM | 5:00 AM | Same day |
| 11:00 AM | 6:00 AM | Same day |
| 12:00 PM | 7:00 AM | Same day |
| 1:00 PM | 8:00 AM | Same day |
| 2:00 PM | 9:00 AM | Same day |
| 3:00 PM | 10:00 AM | Same day |
| 4:00 PM | 11:00 AM | Same day |
| 5:00 PM | 12:00 PM | Same day |
| 6:00 PM | 1:00 PM | Same day |
| 7:00 PM | 2:00 PM | Same day |
| 8:00 PM | 3:00 PM | Same day |
| 9:00 PM | 4:00 PM | Same day |
| 10:00 PM | 5:00 PM | Same day |
| 11:00 PM | 6:00 PM | Same day |
What BST and EDT mean
BST: British Summer Time
BST here means British Summer Time, UTC+01:00. London returns to GMT in winter. A representative location is London in summer, whose IANA identifier is Europe/London.
EDT: Eastern Daylight Time
EDT means UTC−04:00, the daylight-saving offset used in New York. It is not in force there throughout the year. A representative location is New York in summer, whose IANA identifier is America/New_York.
Common conversion examples
- 6:00 AM BST becomes 1:00 AM EDT.
- 9:00 AM BST becomes 4:00 AM EDT.
- 12:00 PM BST becomes 7:00 AM EDT.
- 6:00 PM BST becomes 1:00 PM EDT.
- 9:00 PM BST becomes 4:00 PM EDT.
Frequently asked questions
Does this table change for daylight saving?
No. The offsets attached to these abbreviations stay fixed. A city may switch to a differently named abbreviation. BST is a daylight-saving designation. EDT is a daylight-saving designation.
Should I put an abbreviation in a meeting invitation?
Use an IANA city time zone and a full date. Abbreviations are useful shorthand when everyone agrees on the meaning, but they do not carry the complete rules that a calendar needs for recurring events.
Why can the day change?
The difference is 300 minutes. Adding or subtracting that amount can move the destination time before midnight or beyond the end of the source day. The last column makes that change explicit.