Chiang Mai to Port Arthur, TX: time difference
Port Arthur, TX is 12 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 19:56 7:56 PM Port Arthur, TX 07:56 7:56 AM You –:–
19:56 7:56 PM
Indochina Time · UTC+7
☀️ 06:20 · 🌙 18:00
07:56 7:56 AM
Central Daylight Time · UTC-5
☀️ 07:21 · 🌙 18:42
·
−12 h
Port Arthur, TX is 12 h behind Chiang Mai.
When you, Chiang Mai and Port Arthur, TX 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
🇺🇸 Port Arthur, TX
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 11 11 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇹🇭 Chiang Mai | 🇺🇸 Port Arthur, TX |
|---|---|---|
| Local time | 19:56 | 07:56 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Indochina Time | Central Daylight Time |
| UTC offset | UTC+7 | UTC-5 |
| Offset from Chiang Mai | — | −12 h |
| IANA zone | Asia/Bangkok | America/Chicago |
| Daylight saving | Not observed | On summer time → UTC-6, Nov 1, 01:00 |
| Sunrise | 06:20 | 07:21 |
| Sunset | 18:00 | 18:42 |
| Daylight | 11 h 40 min | 11 h 21 min |
| People on this clock | 127,240 | 54,135 |
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 Port Arthur, TX: common questions
What is the time difference between Chiang Mai and Port Arthur, TX?
Port Arthur is 12 hours behind: it uses UTC−5, while Chiang Mai is on UTC+7.
If it is 9:00 AM in Chiang Mai, what time is it in Port Arthur, TX?
At 9:00 AM in Chiang Mai, clocks in Port Arthur show 9:00 PM (the previous day).
What time is it in Port Arthur, TX, at the end of the working day in Chiang Mai?
The working day in Chiang Mai ends at 6:00 PM; in Port Arthur it is 6:00 AM at that moment.
When is a good time to call Port Arthur, TX, from Chiang Mai?
Working hours (9:00 AM–6:00 PM) in Chiang Mai and in Port Arthur do not overlap. At 9:00 AM in Chiang Mai it is 9:00 PM (the previous day) in Port Arthur; when the working day starts in Port Arthur, it is 9:00 PM in Chiang Mai.
When is it still the previous day in Port Arthur, TX?
Until 12:00 PM in Chiang Mai it is still the previous day in Port Arthur. The other way round, from 12:00 PM in Port Arthur it is already the next day in Chiang Mai.
Does the time gap between Chiang Mai and Port Arthur, TX, change during the year?
Yes – daylight saving time is used in Port Arthur but not in Chiang Mai. From November 1, 2026, Port Arthur will be 13 hours behind Chiang Mai.
