GMT 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 GMT to Windsor Time, subtract 5 hours from the GMT time: 9:00 AM GMT = 4:00 AM EST.
GMT (GMT) is used in Same offset as UTC. The UK and Ireland use GMT in winter; Iceland, Ghana and Senegal all year. Windsor Time (Windsor time) is used in Windsor, Canada.
The UK is on GMT only in winter; in summer it uses BST (UTC+1).
GMT to Windsor Time time conversion table
GMT to Windsor Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| GMT | 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 GMT to Windsor Time
Subtract 5 hours from the GMT 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 GMT and Windsor Time
The time difference between GMT 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 GMT.
- 8 Mar 2026 – 31 Oct 2026: Windsor Time is 4 hours behind of GMT.
- 1 Nov 2026 – 31 Dec 2026: Windsor Time is 5 hours behind of GMT.
GMT and Windsor Time during daylight saving time
- GMT does not observe daylight saving time; it stays on UTC+0 all year.
- 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 GMT and Windsor Time
GMT 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.
GMT to Windsor Time FAQ
What is the time difference between GMT and Windsor Time?
Right now EST is 5 hours behind GMT. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM GMT in Windsor Time?
9:00 AM GMT is 4:00 AM EST.
What is 12 PM (noon) GMT in Windsor Time?
12:00 PM GMT is 7:00 AM EST.
Is Windsor Time ahead of or behind GMT?
EST is 5 hours behind GMT, so it is earlier in Windsor Time than in GMT.
Does GMT change for daylight saving time?
No. GMT stays on the same offset all year, so conversions never shift for daylight saving time.
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 GMT and Windsor Time?
GMT 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 GMT
Convert GMT to other time zones
Convert other time zones to Windsor Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.