Montreal to Portsmouth: time difference
Portsmouth is 1 h ahead of Montreal. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Montreal 19:37 7:37 PM Portsmouth 20:37 8:37 PM You –:–
19:37 7:37 PM
Eastern Standard Time · UTC-5
☀️ 06:41 · 🌙 16:36
20:37 8:37 PM
Atlantic Standard Time · UTC-4
☀️ 06:05 · 🌙 17:36
·
+1 h
Portsmouth is 1 h ahead of Montreal.
When you, Montreal and Portsmouth are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇨🇦 Montreal
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇩🇲 Portsmouth
1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM 0 12 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇦 Montreal | 🇩🇲 Portsmouth |
|---|---|---|
| Local time | 19:37 | 20:37 |
| Local date | Friday, November 6, 2026 | Friday, November 6, 2026 |
| Time zone | Eastern Standard Time | Atlantic Standard Time |
| UTC offset | UTC-5 | UTC-4 |
| Offset from Montreal | — | +1 h |
| IANA zone | America/Toronto | America/Dominica |
| Daylight saving | On standard time → UTC-4, Mar 14, 03:00 | Not observed |
| Sunrise | 06:41 | 06:05 |
| Sunset | 16:36 | 17:36 |
| Daylight | 9 h 55 min | 11 h 31 min |
| People on this clock | 1,762,949 | 3,633 |
Compare Montreal with another city
More comparisons with Montreal: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Montreal and Portsmouth: common questions
How many hours ahead of Montreal is Portsmouth?
The clocks in Portsmouth are 1 hour ahead of those in Montreal (UTC−4 and UTC−5).
If it is 9:00 AM in Montreal, what time is it in Portsmouth?
At 9:00 AM in Montreal, clocks in Portsmouth show 10:00 AM.
What time is it in Portsmouth when it is 6:00 PM in Montreal?
When it is 6:00 PM in Montreal, it is 7:00 PM in Portsmouth.
When do working hours in Montreal and in Portsmouth overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 5:00 PM in Montreal, which is 10:00 AM to 6:00 PM in Portsmouth.
When does the date change in Portsmouth compared with Montreal?
The new day starts in Portsmouth earlier: at 11:00 PM in Montreal it is already midnight there. Until 1:00 AM in Portsmouth, Montreal is still on the previous day.
Is the time difference between Montreal and Portsmouth the same all year?
No. Only Montreal switches to summer time, so the gap changes twice a year. From March 14, 2027, Portsmouth and Montreal will have the same time.
