Helena, MT to Chiang Mai: time difference
Chiang Mai is 13 h ahead of Helena, MT. 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.
Helena, MT 00:49 12:49 AM Chiang Mai 13:49 1:49 PM You –:–
00:49 12:49 AM
Mountain Daylight Time · UTC-6
☀️ 07:38 · 🌙 18:54
13:49 1:49 PM
Indochina Time · UTC+7
☀️ 06:17 · 🌙 18:07
·
+13 h
Chiang Mai is 13 h ahead of Helena, MT.
When you, Helena, MT 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
🇺🇸 Helena, MT
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
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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- Working hours
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Time zones side by side
| Detail | 🇺🇸 Helena, MT | 🇹🇭 Chiang Mai |
|---|---|---|
| Local time | 00:49 | 13:49 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Mountain Daylight Time | Indochina Time |
| UTC offset | UTC-6 | UTC+7 |
| Offset from Helena, MT | — | +13 h |
| IANA zone | America/Denver | Asia/Bangkok |
| Daylight saving | On summer time → UTC-7, Nov 1, 01:00 | Not observed |
| Sunrise | 07:38 | 06:17 |
| Sunset | 18:54 | 18:07 |
| Daylight | 11 h 16 min | 11 h 49 min |
| People on this clock | 32,091 | 127,240 |
Compare Helena, MT with another city
More comparisons with Helena, MT: the time zones next to it and the far side of the clock.
Nearby time zones
Helena, MT and Chiang Mai: common questions
What is the time difference between Helena, MT, and Chiang Mai?
Chiang Mai is 13 hours ahead: it uses UTC+7, while Helena is on UTC−6.
What time is it in Chiang Mai at the start of the working day in Helena, MT?
The working day in Helena starts at 9:00 AM; in Chiang Mai it is 10:00 PM at that moment.
What time is it in Chiang Mai when it is 6:00 PM in Helena, MT?
When it is 6:00 PM in Helena, it is 7:00 AM (the next day) in Chiang Mai.
When do working hours in Helena, MT, and in Chiang Mai overlap?
They don't: there are no shared working hours. The start of the day in Helena (9:00 AM) is 10:00 PM in Chiang Mai, and the start of the day in Chiang Mai is 8:00 PM (the previous day) in Helena.
When does the date change in Chiang Mai compared with Helena, MT?
The new day starts in Chiang Mai earlier: at 11:00 AM in Helena it is already midnight there. Until 1:00 PM in Chiang Mai, Helena is still on the previous day.
Does the time gap between Helena, MT, and Chiang Mai change during the year?
Yes – daylight saving time is used in Helena but not in Chiang Mai. From November 1, 2026, Chiang Mai will be 14 hours ahead of Helena.
