Chiang Mai to Grass Valley, CA: time difference
Grass Valley, CA is 14 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 05:15 5:15 AM Grass Valley, CA 15:15 3:15 PM You –:–
05:15 5:15 AM
Indochina Time · UTC+7
☀️ 06:20 · 🌙 17:58
15:15 3:15 PM
Pacific Daylight Time · UTC-7
☀️ 07:20 · 🌙 18:20
·
−14 h
Grass Valley, CA is 14 h behind Chiang Mai.
When you, Chiang Mai and Grass Valley, CA 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
🇺🇸 Grass Valley, CA
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 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇹🇭 Chiang Mai | 🇺🇸 Grass Valley, CA |
|---|---|---|
| Local time | 05:15 | 15:15 |
| Local date | Wednesday, October 21, 2026 | Tuesday, October 20, 2026 |
| Time zone | Indochina Time | Pacific Daylight Time |
| UTC offset | UTC+7 | UTC-7 |
| Offset from Chiang Mai | — | −14 h |
| IANA zone | Asia/Bangkok | America/Los Angeles |
| Daylight saving | Not observed | On summer time → UTC-8, Nov 1, 01:00 |
| Sunrise | 06:20 | 07:20 |
| Sunset | 17:58 | 18:20 |
| Daylight | 11 h 38 min | 11 h |
| People on this clock | 127,240 | 14,016 |
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 Grass Valley, CA: common questions
How many hours behind Chiang Mai is Grass Valley, CA?
The clocks in Grass Valley are 14 hours behind those in Chiang Mai (UTC−7 and UTC+7).
What time is it in Grass Valley, CA, when it is 9:00 AM in Chiang Mai?
When it is 9:00 AM in Chiang Mai, it is 7:00 PM (the previous day) in Grass Valley.
What time is it in Grass Valley, CA, at the end of the working day in Chiang Mai?
The working day in Chiang Mai ends at 6:00 PM; in Grass Valley it is 4:00 AM at that moment.
Is there a time when both Chiang Mai and Grass Valley, CA, are at work?
No, the working days (9:00 AM–6:00 PM) do not overlap. When the day starts in Chiang Mai at 9:00 AM, it is 7:00 PM (the previous day) in Grass Valley; the day in Grass Valley starts at 11:00 PM in Chiang Mai time.
When does the date change in Grass Valley, CA, compared with Chiang Mai?
The new day starts in Grass Valley later: until 2:00 PM in Chiang Mai, it is still the previous day there. From 10:00 AM in Grass Valley, Chiang Mai is already on the next day.
Does the time difference between Chiang Mai and Grass Valley, CA, change?
Yes. The clocks change only in Grass Valley. From November 1, 2026, Grass Valley will be 15 hours behind Chiang Mai.
