CEST to BST Time Converter
BST is 1 hour behind CEST. CEST is UTC+2:00, and BST is UTC+1:00.
Best Time to Call Between CEST and BST
Both zones are inside normal business hours between 10:00 AM and 5:00 PM CEST — that's 9:00 AM to 4:00 PM BST. That's a 7-hour window.
both at work CEST only BST only neither — hours along the strip are CEST.
Common Times Converted
CEST on the left, BST on the right.
CEST to BST: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| CEST | BST | Working hours |
|---|---|---|
| 12:00 AM | 11:00 PM prev day | — |
| 1:00 AM | 12:00 AM | — |
| 2:00 AM | 1:00 AM | — |
| 3:00 AM | 2:00 AM | — |
| 4:00 AM | 3:00 AM | — |
| 5:00 AM | 4:00 AM | — |
| 6:00 AM | 5:00 AM | — |
| 7:00 AM | 6:00 AM | — |
| 8:00 AM | 7:00 AM | — |
| 9:00 AM | 8:00 AM | CEST only |
| 10:00 AM | 9:00 AM | Both zones |
| 11:00 AM | 10:00 AM | Both zones |
| 12:00 PM | 11:00 AM | Both zones |
| 1:00 PM | 12:00 PM | Both zones |
| 2:00 PM | 1:00 PM | Both zones |
| 3:00 PM | 2:00 PM | Both zones |
| 4:00 PM | 3:00 PM | Both zones |
| 5:00 PM | 4:00 PM | BST only |
| 6:00 PM | 5:00 PM | — |
| 7:00 PM | 6:00 PM | — |
| 8:00 PM | 7:00 PM | — |
| 9:00 PM | 8:00 PM | — |
| 10:00 PM | 9:00 PM | — |
| 11:00 PM | 10:00 PM | — |
What CEST and BST Actually Are
CEST — Central European Summer Time
Paris, Berlin, Madrid, Rome, Amsterdam, Vienna, Warsaw. Standing at UTC+2:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, October 25, 2026, to CET.
The EU synchronized its daylight saving dates in 1996 so the whole bloc switches on the same weekend, which is why CEST starts and ends everywhere at once.
BST — British Summer Time
London, Manchester, Birmingham, Glasgow, and the rest of the UK from late March to late October. Standing at UTC+1:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, October 25, 2026, to GMT. BST also stands for Bangladesh Standard Time (UTC+6). BDT is the clearer label for that one.
British Summer Time began in 1916 as a wartime fuel-saving measure and has run every year since, making it one of the oldest continuous daylight saving schemes in the world.
What This Means in Practice
Both sides change clocks, on different dates
Both regions observe daylight saving but do not switch on the same day, so for a week or two each spring and fall the gap between them is an hour different from the rest of the year. Those short windows are where recurring invitations quietly break.
Close enough to share a working day
At only 1 hour apart, the two working days overlap almost completely. Scheduling is barely constrained by the difference.
Major Cities in Each Zone
Cities on CEST
Cities on BST
Frequently Asked Questions
What is the time difference between CEST and BST?
BST is 1 hour behind CEST.
What is 9:00 AM CEST in BST?
9:00 AM CEST is 8:00 AM BST.
What are the best hours to schedule a call between CEST and BST?
Between 10:00 AM and 5:00 PM CEST, which is 9:00 AM to 4:00 PM BST. Both sides are inside normal business hours through that window.
Does the difference between CEST and BST change during the year?
Yes. Both regions observe daylight saving, and they do not switch on the same dates, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, October 25, 2026.
Does BST always mean British Summer Time?
BST also stands for Bangladesh Standard Time (UTC+6). BDT is the clearer label for that one.