Chiang Mai to Portsmouth, NH: time difference
Portsmouth, NH 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 15:16 3:16 PM Portsmouth, NH 04:16 4:16 AM You –:–
15:16 3:16 PM
Indochina Time · UTC+7
☀️ 06:20 · 🌙 18:00
04:16 4:16 AM
Eastern Daylight Time · UTC-4
☀️ 07:02 · 🌙 17:55
·
−11 h
Portsmouth, NH is 11 h behind Chiang Mai.
When you, Chiang Mai and Portsmouth, NH 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, NH
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, NH |
|---|---|---|
| Local time | 15:16 | 04:16 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Indochina Time | Eastern Daylight Time |
| UTC offset | UTC+7 | UTC-4 |
| Offset from Chiang Mai | — | −11 h |
| IANA zone | Asia/Bangkok | America/New York |
| Daylight saving | Not observed | On summer time → UTC-5, Nov 1, 01:00 |
| Sunrise | 06:20 | 07:02 |
| Sunset | 18:00 | 17:55 |
| Daylight | 11 h 40 min | 10 h 54 min |
| People on this clock | 127,240 | 95,535 |
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, NH: common questions
What is the time difference between Chiang Mai and Portsmouth, NH?
Portsmouth is 11 hours behind: it uses UTC−4, while Chiang Mai is on UTC+7.
What time is it in Portsmouth, NH, at the start of the working day in Chiang Mai?
The working day in Chiang Mai starts at 9:00 AM; in Portsmouth it is 10:00 PM (the previous day) at that moment.
What time is it in Portsmouth, NH, at the end of the working day in Chiang Mai?
The working day in Chiang Mai ends at 6:00 PM; in Portsmouth it is 7:00 AM at that moment.
When is a good time to call Portsmouth, NH, from Chiang Mai?
Working hours (9:00 AM–6:00 PM) in Chiang Mai and in Portsmouth do not overlap. At 9:00 AM in Chiang Mai it is 10:00 PM (the previous day) in Portsmouth; when the working day starts in Portsmouth, it is 8:00 PM in Chiang Mai.
When does the date change in Portsmouth, NH, compared with Chiang Mai?
The new day starts in Portsmouth later: until 11:00 AM in Chiang Mai, it is still the previous day there. From 1:00 PM in Portsmouth, Chiang Mai is already on the next day.
Does the time gap between Chiang Mai and Portsmouth, NH, change during the year?
Yes – daylight saving time is used in Portsmouth but not in Chiang Mai. From November 1, 2026, Portsmouth will be 12 hours behind Chiang Mai.
