Herndon, VA to Chiang Mai: time difference
Chiang Mai is 11 h ahead of Herndon, VA. 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.
Herndon, VA 04:21 4:21 AM Chiang Mai 15:21 3:21 PM You –:–
04:21 4:21 AM
Eastern Daylight Time · UTC-4
☀️ 07:23 · 🌙 18:28
15:21 3:21 PM
Indochina Time · UTC+7
☀️ 06:19 · 🌙 18:01
·
+11 h
Chiang Mai is 11 h ahead of Herndon, VA.
When you, Herndon, VA 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
🇺🇸 Herndon, VA
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
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Time zones side by side
| Detail | 🇺🇸 Herndon, VA | 🇹🇭 Chiang Mai |
|---|---|---|
| Local time | 04:21 | 15:21 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Eastern Daylight Time | Indochina Time |
| UTC offset | UTC-4 | UTC+7 |
| Offset from Herndon, VA | — | +11 h |
| IANA zone | America/New York | Asia/Bangkok |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:23 | 06:19 |
| Sunset | 18:28 | 18:01 |
| Daylight | 11 h 6 min | 11 h 41 min |
| People on this clock | 24,655 | 127,240 |
Compare Herndon, VA with another city
More comparisons with Herndon, VA: the time zones next to it and the far side of the clock.
Nearby time zones
Herndon, VA and Chiang Mai: common questions
How far ahead of Herndon, VA, is Chiang Mai?
Chiang Mai is 11 hours ahead of Herndon: UTC+7 against UTC−4.
If it is 9:00 AM in Herndon, VA, what time is it in Chiang Mai?
At 9:00 AM in Herndon, clocks in Chiang Mai show 8:00 PM.
If it is 6:00 PM in Herndon, VA, what time is it in Chiang Mai?
At 6:00 PM in Herndon, clocks in Chiang Mai show 5:00 AM (the next day).
When is a good time to call Chiang Mai from Herndon, VA?
Working hours (9:00 AM–6:00 PM) in Herndon and in Chiang Mai do not overlap. At 9:00 AM in Herndon 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 Herndon.
When is it already the next day in Chiang Mai?
From 1:00 PM in Herndon, VA, 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 Herndon.
Is the time difference between Herndon, VA, and Chiang Mai the same all year?
No. Only Herndon switches to summer time, so the gap changes twice a year. From November 1, 2026, Chiang Mai will be 12 hours ahead of Herndon.
