Chiang Mai to Portsmouth: time difference
Portsmouth is 11 h behind Chiang Mai. 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.
Chiang Mai 15:57 3:57 PM Portsmouth 04:57 4:57 AM You –:–
15:57 3:57 PM
Indochina Time · UTC+7
☀️ 06:17 · 🌙 18:07
04:57 4:57 AM
Atlantic Standard Time · UTC-4
☀️ 05:57 · 🌙 17:50
·
−11 h
Portsmouth is 11 h behind Chiang Mai.
When you, Chiang Mai 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
🇹🇭 Chiang Mai
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
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 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇹🇭 Chiang Mai | 🇩🇲 Portsmouth |
|---|---|---|
| Local time | 15:57 | 04:57 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Indochina Time | Atlantic Standard Time |
| UTC offset | UTC+7 | UTC-4 |
| Offset from Chiang Mai | — | −11 h |
| IANA zone | Asia/Bangkok | America/Dominica |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:17 | 05:57 |
| Sunset | 18:07 | 17:50 |
| Daylight | 11 h 49 min | 11 h 52 min |
| People on this clock | 127,240 | 3,633 |
Compare Chiang Mai with another city
More comparisons with Chiang Mai: the time zones next to it and the far side of the clock.
Big time differences
Chiang Mai and Portsmouth: common questions
How many hours behind Chiang Mai is Portsmouth?
The clocks in Portsmouth are 11 hours behind those in Chiang Mai (UTC−4 and UTC+7).
If it is 9:00 AM in Chiang Mai, what time is it in Portsmouth?
At 9:00 AM in Chiang Mai, clocks in Portsmouth show 10:00 PM (the previous day).
What time is it in Portsmouth when it is 6:00 PM in Chiang Mai?
When it is 6:00 PM in Chiang Mai, it is 7:00 AM in Portsmouth.
Is there a time when both Chiang Mai and Portsmouth are at work?
No, the working days (9:00 AM–6:00 PM) do not overlap. When the day starts in Chiang Mai at 9:00 AM, it is 10:00 PM (the previous day) in Portsmouth; the day in Portsmouth starts at 8:00 PM in Chiang Mai time.
When is it still the previous day in Portsmouth?
Until 11:00 AM in Chiang Mai it is still the previous day in Portsmouth. The other way round, from 1:00 PM in Portsmouth it is already the next day in Chiang Mai.
Is the time difference between Chiang Mai and Portsmouth the same all year?
Yes. Neither Chiang Mai nor Portsmouth switches to summer time, so the gap is always 11 hours.
