BST to Windsor Time Converter
EST is 5 hours behind GMT. 9:00 AM GMT = 4:00 AM EST.
EST is 5 hours behind GMT at the moment. To convert BST to Windsor Time, subtract 5 hours from the BST time: 9:00 AM GMT = 4:00 AM EST.
BST (British Time) is used in United Kingdom from late March to late October. Windsor Time (Windsor time) is used in Windsor, Canada.
BST here means British Summer Time, not Bangladesh Standard Time. BST (British Summer Time) is not in force right now: United Kingdom from late March to late October is currently on GMT. This page uses whichever name applies on the date you pick, so the numbers below say GMT.
BST to Windsor Time time conversion table
BST to Windsor Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| BST | Windsor Time | Day |
|---|---|---|
| 12:00 AM GMT | 7:00 PM EST | previous day |
| 1:00 AM GMT | 8:00 PM EST | previous day |
| 2:00 AM GMT | 9:00 PM EST | previous day |
| 3:00 AM GMT | 10:00 PM EST | previous day |
| 4:00 AM GMT | 11:00 PM EST | previous day |
| 5:00 AM GMT | 12:00 AM EST | night |
| 6:00 AM GMT | 1:00 AM EST | night |
| 7:00 AM GMT | 2:00 AM EST | night |
| 8:00 AM GMT | 3:00 AM EST | night |
| 9:00 AM GMT | 4:00 AM EST | night |
| 10:00 AM GMT | 5:00 AM EST | night |
| 11:00 AM GMT | 6:00 AM EST | — |
| 12:00 PM GMT | 7:00 AM EST | — |
| 1:00 PM GMT | 8:00 AM EST | — |
| 2:00 PM GMT | 9:00 AM EST | work hours |
| 3:00 PM GMT | 10:00 AM EST | work hours |
| 4:00 PM GMT | 11:00 AM EST | work hours |
| 5:00 PM GMT | 12:00 PM EST | — |
| 6:00 PM GMT | 1:00 PM EST | — |
| 7:00 PM GMT | 2:00 PM EST | — |
| 8:00 PM GMT | 3:00 PM EST | — |
| 9:00 PM GMT | 4:00 PM EST | — |
| 10:00 PM GMT | 5:00 PM EST | — |
| 11:00 PM GMT | 6:00 PM EST | — |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert BST to Windsor Time
Subtract 5 hours from the BST time to get Windsor Time.
Example: 9:00 AM GMT = 4:00 AM EST.
Across midnight: 1:00 AM GMT = 8:00 PM EST (previous day). The date changes, so always check the day as well as the hour.
Time difference between BST and Windsor Time
The time difference between BST and Windsor Time is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 1 Jan 2026 – 7 Mar 2026: Windsor Time is 5 hours behind of BST.
- 8 Mar 2026 – 28 Mar 2026: Windsor Time is 4 hours behind of BST.
- 29 Mar 2026 – 24 Oct 2026: Windsor Time is 5 hours behind of BST.
- 25 Oct 2026 – 31 Oct 2026: Windsor Time is 4 hours behind of BST.
- 1 Nov 2026 – 31 Dec 2026: Windsor Time is 5 hours behind of BST.
BST and Windsor Time during daylight saving time
- BST next changes on 28 Mar 2027: clocks go forward one hour at 00:59 local time, from GMT (UTC+0) to BST (UTC+1).
- Windsor Time next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from EST (UTC−5) to EDT (UTC−4).
Best time for a meeting between BST and Windsor Time
BST and Windsor Time share 3 hours of the 9 AM–5 PM working day. Any time between 2:00 PM and 5:00 PM GMT lands between 9:00 AM and 12:00 PM EST, inside working hours for both.
BST to Windsor Time FAQ
What is the time difference between BST and Windsor Time?
Right now EST is 5 hours behind GMT. The gap changes 5 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM BST in Windsor Time?
9:00 AM GMT is 4:00 AM EST.
What is 12 PM (noon) BST in Windsor Time?
12:00 PM GMT is 7:00 AM EST.
Is Windsor Time ahead of or behind BST?
EST is 5 hours behind GMT, so it is earlier in Windsor Time than in BST.
Does BST change for daylight saving time?
Yes. BST next changes on 28 Mar 2027, when clocks go forward one hour from GMT to BST.
Does Windsor Time change for daylight saving time?
Yes. Windsor Time next changes on 14 Mar 2027, when clocks go forward one hour from EST to EDT.
What is the best time for a meeting between BST and Windsor Time?
BST and Windsor Time share 3 hours of the 9 AM–5 PM working day. Any time between 2:00 PM and 5:00 PM GMT lands between 9:00 AM and 12:00 PM EST, inside working hours for both.
Related conversions
Convert Windsor Time to BST
Convert BST to other time zones
Convert other time zones to Windsor Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.