Chiang Mai to Waltham, MA: time difference
Waltham, MA 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 18:32 6:32 PM Waltham, MA 07:32 7:32 AM You –:–
18:32 6:32 PM
Indochina Time · UTC+7
☀️ 06:19 · 🌙 18:01
07:32 7:32 AM
Eastern Daylight Time · UTC-4
☀️ 07:02 · 🌙 18:00
·
−11 h
Waltham, MA is 11 h behind Chiang Mai.
When you, Chiang Mai and Waltham, MA 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
🇺🇸 Waltham, MA
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
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇹🇭 Chiang Mai | 🇺🇸 Waltham, MA |
|---|---|---|
| Local time | 18:32 | 07:32 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 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 | 07:02 |
| Sunset | 18:01 | 18:00 |
| Daylight | 11 h 41 min | 10 h 58 min |
| People on this clock | 127,240 | 60,636 |
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 Waltham, MA: common questions
How far behind Chiang Mai is Waltham, MA?
Waltham is 11 hours behind Chiang Mai: UTC−4 against UTC+7.
What time is it in Waltham, MA, at the start of the working day in Chiang Mai?
The working day in Chiang Mai starts at 9:00 AM; in Waltham it is 10:00 PM (the previous day) at that moment.
What time is it in Waltham, MA, at the end of the working day in Chiang Mai?
The working day in Chiang Mai ends at 6:00 PM; in Waltham it is 7:00 AM at that moment.
Is there a time when both Chiang Mai and Waltham, MA, 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 10:00 PM (the previous day) in Waltham; the day in Waltham starts at 8:00 PM in Chiang Mai time.
Until what time in Chiang Mai is it still yesterday in Waltham, MA?
Before 11:00 AM in Chiang Mai, the date in Waltham has not changed yet. From 1:00 PM in Waltham, it is already the next day in Chiang Mai.
Does the time gap between Chiang Mai and Waltham, MA, change during the year?
Yes – daylight saving time is used in Waltham but not in Chiang Mai. From November 1, 2026, Waltham will be 12 hours behind Chiang Mai.
