British Summer Time
BST means UTC+01:00 throughout the year. London follows regional clock rules and uses UTC on your selected date.
Use London for local civil time →Other meanings: Bangladesh Standard Time.
TIME ZONE CONVERTER
BST to London
Time Converter
Convert British Summer Time to London, United Kingdom. Compare dates, seasonal differences and meeting hours.
BST is 0h or 1h ahead of London in 2026, depending on the date.
9 AM BST = 8 AM London
Selected date: November 4, 2026. Fixed abbreviations retain their stated UTC offsets.
THE QUICK REFERENCE
CSVBST to London conversion table
November 4, 2026 · Date changes are marked.
View the full 24-hour table
| BST | London |
|---|---|
| 12:00 AM | 11:00 PM -1 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 |
| 10:00 AM | 9:00 AM |
| 11:00 AM | 10:00 AM |
| BST | London |
|---|---|
| 12:00 PM | 11:00 AM |
| 1:00 PM | 12:00 PM |
| 2:00 PM | 1:00 PM |
| 3:00 PM | 2:00 PM |
| 4:00 PM | 3:00 PM |
| 5:00 PM | 4:00 PM |
| 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 |
Starting with the London working day
These examples start on 2026-11-04 in London.
09:00 London10:00 →BST · 2026-11-04
17:00 London18:00 →BST · 2026-11-04
Which time-zone meaning are we using?
ONE CLOCK TIME. THE WHOLE YEAR.
Year CSV09:00 BST to London throughout 2026
Keeping 09:00 on the BST clock produces 2 different destination clock/date answers in 2026. The ranges below use BST calendar dates, including transition days.
| Dates in BST · 2026 | London answer | Source → destination offsets | Explore |
|---|---|---|---|
| Jan 1 – Mar 2887 dates | 08:00Same date | UTC+01:00 → UTC | |
| Mar 29 – Oct 24210 dates | 09:00Same date | UTC+01:00 → UTC+01:00 | |
| Oct 25 – Dec 3168 dates | 08:00Same date | UTC+01:00 → UTC |
Every calendar date is included, not just workdays. Date ranges include both endpoints. Based on IANA 2026e; future rules may change.
DON’T LOSE A DAY
When does BST time become a different date in London?
Your complete source day: 2026-11-04. Each range shows which destination date to use.
BST · 2026-11-0400:00–01:00UTC+01:00
London · 2026-11-0323:00–24:00UTC Previous day
BST · 2026-11-0401:00–24:00UTC+01:00
London · 2026-11-0400:00–23:00UTC Same date
Range starts are included; ends are excluded. 24:00 means midnight at the end of that date. Repeated hours appear separately with their UTC offsets. The strip is proportional to elapsed time.
THE BIGGER PICTURE
2026A year of time differences.
How London compares with BST throughout 2026.
JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
−1h
0h
−1h
London changes its UTC offset in 2026. BST is a fixed offset.
See exact change periods
| From (UTC, inclusive) | Until (UTC, exclusive) | London vs BST |
|---|---|---|
| 1 Jan 2026, 00:00 UTC | 29 Mar 2026, 01:00 UTC | 1h behind |
| 29 Mar 2026, 01:00 UTC | 25 Oct 2026, 01:00 UTC | 0h difference |
| 25 Oct 2026, 01:00 UTC | 1 Jan 2027, 00:00 UTC | 1h behind |
CLOCK CHANGES
What changes at the next clock adjustment?
Exact periods outside the most common difference in 2026
The most frequent difference has London the same time relative to BST. Exceptions:
| From (UTC, inclusive) | Until (UTC, exclusive) | Compared with BST |
|---|---|---|
| 1 Jan 2026, 00:00 UTC | 29 Mar 2026, 01:00 UTC | 1h behind |
| 25 Oct 2026, 01:00 UTC | 1 Jan 2027, 00:00 UTC | 1h behind |
PLAN BEYOND A SINGLE DAY
Daily CSVBST–London working hours through 2026
Every date calculated with your working windows. 261 selected BST workdays; public holidays are not applied.
Least shared time7h
Most common8h
Most shared time8h
Days without a 60-min slot0 / 261
A start time that survives the whole year.
Start a 60-minute meeting in BST 10:00–16:00.
These starts fit both working windows on every selected BST workday in 2026, using a 15-minute start grid. The end of each range is the last valid start.
BST: 09:00–17:00, Mon, Tue, Wed, Thu, Fri. London: 09:00–17:00, Mon, Tue, Wed, Thu, Fri.
Calculation details and repeated hours
Overnight shifts belong to their start weekday. Host workday means the source calendar date. Repeated local times use the first occurrence.
THE DETAILS THAT MATTER
BST to London: useful answers
Why is the BST to London difference sometimes 0 hours and sometimes 1 hour?
BST is 0h or 1h ahead of London in 2026, depending on the date. London changes its UTC offset in 2026. BST is a fixed offset.
Is BST the same as local city time?
BST is fixed at UTC+01:00. London to London uses regional rules instead. On 2026-11-04, 09:00 at the source becomes 09:00 at the destination (GMT). Choose the local-city option above when that is the clock you mean.
Which cities match BST throughout 2026?
Lagos, Nigeria; Kinshasa, Congo - Kinshasa; Luanda, Angola; Abuja, Nigeria keep the same UTC+01:00 offset as fixed BST throughout 2026 under the published rules. Matching an offset does not mean every place uses the abbreviation BST.
Does the BST–London time difference change in 2026?
The published rules produce 3 periods with 2 different offsets in 2026. See the annual chart for the exact boundaries of each period.
Does this conversion change the calendar date?
09:00 in BST on 2026-11-04 is 08:00 in London on 2026-11-04. This selected time stays on the same date in both places. Other times can cross midnight.
Can BST and London meet during working hours?
Your selected working windows share 7h on 2026-11-04. The planner above checks the whole meeting duration and shows suitable start times. Edit the windows to match your team.
Related time-zone meanings and conversions
Calculated with IANA 2026e. Working hours are your preferences; public holidays and calendar availability are not included. Our methodology