Port Arthur, TX to Chiang Mai: time difference
Chiang Mai is 12 h ahead of Port Arthur, TX. 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.
Port Arthur, TX 07:00 7:00 AM Chiang Mai 19:00 7:00 PM You –:–
07:00 7:00 AM
Central Daylight Time · UTC-5
☀️ 07:21 · 🌙 18:42
19:00 7:00 PM
Indochina Time · UTC+7
☀️ 06:20 · 🌙 18:00
·
+12 h
Chiang Mai is 12 h ahead of Port Arthur, TX.
When you, Port Arthur, TX 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
🇺🇸 Port Arthur, TX
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
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
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Time zones side by side
| Detail | 🇺🇸 Port Arthur, TX | 🇹🇭 Chiang Mai |
|---|---|---|
| Local time | 07:00 | 19:00 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Central Daylight Time | Indochina Time |
| UTC offset | UTC-5 | UTC+7 |
| Offset from Port Arthur, TX | — | +12 h |
| IANA zone | America/Chicago | Asia/Bangkok |
| Daylight saving | On summer time → UTC-6, Nov 1, 01:00 | Not observed |
| Sunrise | 07:21 | 06:20 |
| Sunset | 18:42 | 18:00 |
| Daylight | 11 h 21 min | 11 h 40 min |
| People on this clock | 54,135 | 127,240 |
Compare Port Arthur, TX with another city
More comparisons with Port Arthur, TX: the time zones next to it and the far side of the clock.
Nearby time zones
Port Arthur, TX and Chiang Mai: common questions
How many hours ahead of Port Arthur, TX, is Chiang Mai?
The clocks in Chiang Mai are 12 hours ahead of those in Port Arthur (UTC+7 and UTC−5).
If it is 9:00 AM in Port Arthur, TX, what time is it in Chiang Mai?
At 9:00 AM in Port Arthur, clocks in Chiang Mai show 9:00 PM.
What time is it in Chiang Mai at the end of the working day in Port Arthur, TX?
The working day in Port Arthur ends at 6:00 PM; in Chiang Mai it is 6:00 AM (the next day) at that moment.
When do working hours in Port Arthur, TX, and in Chiang Mai overlap?
They don't: there are no shared working hours. The start of the day in Port Arthur (9:00 AM) is 9:00 PM in Chiang Mai, and the start of the day in Chiang Mai is 9:00 PM (the previous day) in Port Arthur.
When does the date change in Chiang Mai compared with Port Arthur, TX?
The new day starts in Chiang Mai earlier: at 12:00 PM in Port Arthur it is already midnight there. Until 12:00 PM in Chiang Mai, Port Arthur is still on the previous day.
Does the time difference between Port Arthur, TX, and Chiang Mai change?
Yes. The clocks change only in Port Arthur. From November 1, 2026, Chiang Mai will be 13 hours ahead of Port Arthur.
