Chiang Mai to West Chester, PA: time difference
West Chester, PA 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 05:00 5:00 AM West Chester, PA 18:00 6:00 PM You –:–
05:00 5:00 AM
Indochina Time · UTC+7
☀️ 06:19 · 🌙 18:01
18:00 6:00 PM
Eastern Daylight Time · UTC-4
☀️ 07:15 · 🌙 18:21
·
−11 h
West Chester, PA is 11 h behind Chiang Mai.
When you, Chiang Mai and West Chester, PA 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
🇺🇸 West Chester, PA
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
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Time zones side by side
| Detail | 🇹🇭 Chiang Mai | 🇺🇸 West Chester, PA |
|---|---|---|
| Local time | 05:00 | 18:00 |
| Local date | Sunday, October 18, 2026 | Saturday, October 17, 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 | 06:19 | 07:15 |
| Sunset | 18:01 | 18:21 |
| Daylight | 11 h 41 min | 11 h 6 min |
| People on this clock | 127,240 | 18,671 |
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 West Chester, PA: common questions
How far behind Chiang Mai is West Chester, PA?
West Chester is 11 hours behind Chiang Mai: UTC−4 against UTC+7.
What time is it in West Chester, PA, at the start of the working day in Chiang Mai?
The working day in Chiang Mai starts at 9:00 AM; in West Chester it is 10:00 PM (the previous day) at that moment.
What time is it in West Chester, PA, when it is 6:00 PM in Chiang Mai?
When it is 6:00 PM in Chiang Mai, it is 7:00 AM in West Chester.
When is a good time to call West Chester, PA, from Chiang Mai?
Working hours (9:00 AM–6:00 PM) in Chiang Mai and in West Chester do not overlap. At 9:00 AM in Chiang Mai it is 10:00 PM (the previous day) in West Chester; when the working day starts in West Chester, it is 8:00 PM in Chiang Mai.
When is it still the previous day in West Chester, PA?
Until 11:00 AM in Chiang Mai it is still the previous day in West Chester. The other way round, from 1:00 PM in West Chester it is already the next day in Chiang Mai.
Is the time difference between Chiang Mai and West Chester, PA, the same all year?
No. Only West Chester switches to summer time, so the gap changes twice a year. From November 1, 2026, West Chester will be 12 hours behind Chiang Mai.
