Sumy to Chiang Mai: time difference
Chiang Mai is 4 h ahead of Sumy. 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.
Sumy 12:30 12:30 PM Chiang Mai 16:30 4:30 PM You –:–
12:30 12:30 PM
Eastern European Summer Time · UTC+3
☀️ 07:09 · 🌙 17:44
16:30 4:30 PM
Indochina Time · UTC+7
☀️ 06:19 · 🌙 18:01
·
+4 h
Chiang Mai is 4 h ahead of Sumy.
When you, Sumy 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
🇺🇦 Sumy
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
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 0 12 AM 1 1 AM 2 2 AM 3 3 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇺🇦 Sumy | 🇹🇭 Chiang Mai |
|---|---|---|
| Local time | 12:30 | 16:30 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Eastern European Summer Time | Indochina Time |
| UTC offset | UTC+3 | UTC+7 |
| Offset from Sumy | — | +4 h |
| IANA zone | Europe/Kyiv | Asia/Bangkok |
| Daylight saving | On summer time → UTC+2, Oct 25, 03:00 | Not observed |
| Sunrise | 07:09 | 06:19 |
| Sunset | 17:44 | 18:01 |
| Daylight | 10 h 36 min | 11 h 41 min |
| People on this clock | 267,633 | 127,240 |
Compare Sumy with another city
More comparisons with Sumy: the time zones next to it and the far side of the clock.
Big time differences
Sumy and Chiang Mai: common questions
How many hours ahead of Sumy is Chiang Mai?
The clocks in Chiang Mai are 4 hours ahead of those in Sumy (UTC+7 and UTC+3).
What time is it in Chiang Mai at the start of the working day in Sumy?
The working day in Sumy starts at 9:00 AM; in Chiang Mai it is 1:00 PM at that moment.
What time is it in Chiang Mai when it is 6:00 PM in Sumy?
When it is 6:00 PM in Sumy, it is 10:00 PM in Chiang Mai.
When is a good time to call Chiang Mai from Sumy?
Between 9:00 AM and 2:00 PM in Sumy – that is 1:00 PM to 6:00 PM in Chiang Mai – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in Chiang Mai?
From 8:00 PM in Sumy it is already the next day in Chiang Mai. The other way round, until 4:00 AM in Chiang Mai it is still the previous day in Sumy.
Is the time difference between Sumy and Chiang Mai the same all year?
No. Only Sumy switches to summer time, so the gap changes twice a year. From October 25, 2026, Chiang Mai will be 5 hours ahead of Sumy.
