Portsmouth to Chiang Mai: time difference
Chiang Mai is 11 h ahead of Portsmouth. 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.
Portsmouth 04:04 4:04 AM Chiang Mai 15:04 3:04 PM You –:–
04:04 4:04 AM
Atlantic Standard Time · UTC-4
☀️ 05:57 · 🌙 17:50
15:04 3:04 PM
Indochina Time · UTC+7
☀️ 06:17 · 🌙 18:07
·
+11 h
Chiang Mai is 11 h ahead of Portsmouth.
When you, Portsmouth and Chiang Mai are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇩🇲 Portsmouth
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
🇹🇭 Chiang Mai
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 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇩🇲 Portsmouth | 🇹🇭 Chiang Mai |
|---|---|---|
| Local time | 04:04 | 15:04 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Atlantic Standard Time | Indochina Time |
| UTC offset | UTC-4 | UTC+7 |
| Offset from Portsmouth | — | +11 h |
| IANA zone | America/Dominica | Asia/Bangkok |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:57 | 06:17 |
| Sunset | 17:50 | 18:07 |
| Daylight | 11 h 52 min | 11 h 49 min |
| People on this clock | 3,633 | 127,240 |
Compare Portsmouth with another city
More comparisons with Portsmouth: the time zones next to it and the far side of the clock.
Nearby time zones
Portsmouth and Chiang Mai: common questions
How far ahead of Portsmouth is Chiang Mai?
Chiang Mai is 11 hours ahead of Portsmouth: UTC+7 against UTC−4.
If it is 9:00 AM in Portsmouth, what time is it in Chiang Mai?
At 9:00 AM in Portsmouth, clocks in Chiang Mai show 8:00 PM.
If it is 6:00 PM in Portsmouth, what time is it in Chiang Mai?
At 6:00 PM in Portsmouth, clocks in Chiang Mai show 5:00 AM (the next day).
When is a good time to call Chiang Mai from Portsmouth?
Working hours (9:00 AM–6:00 PM) in Portsmouth and in Chiang Mai do not overlap. At 9:00 AM in Portsmouth it is 8:00 PM in Chiang Mai; when the working day starts in Chiang Mai, it is 10:00 PM (the previous day) in Portsmouth.
When is it already the next day in Chiang Mai?
From 1:00 PM in Portsmouth it is already the next day in Chiang Mai. The other way round, until 11:00 AM in Chiang Mai it is still the previous day in Portsmouth.
Does the time difference between Portsmouth and Chiang Mai change?
No. Neither place uses daylight saving time, so the difference stays 11 hours all year.
