Time difference between Chicago and Udon Thani
+12 hUdon Thani is 12 hours ahead of Chicago.
Observatory log
Chicago and Udon Thani, compared
- 01Difference now
Udon Thani is 12 hours ahead of Chicago.
Chicago: CDT (UTC−5) · Udon Thani: UTC+7 (UTC+7)
Next changeFrom 1 November 2026: Udon Thani is 13 hours ahead of Chicago.
- 02Through 2026–2027
- 1 January 2026 – 8 March 2026+13 h
- 8 March 2026 – 1 November 2026+12 h
- 1 November 2026 – 14 March 2027+13 h
- 14 March 2027 – 7 November 2027+12 h
- 7 November 2027 – 31 December 2027+13 h
Difference of Udon Thani from Chicago. It changes on the days either place changes its clocks (dates local to that place).
- 03Shared working hours
Their working days never overlap.
Counted as 09:00–17:00 local time on each place’s own working days, for the next seven days.
- 04Best time to meet
09:00–10:00 in Chicago = 21:00–22:00 in Udon Thani
No shared office hours: this is early or late for one side (Mon–Fri).
Also possible: Mon–Thu: 21:00–22:00 in Chicago = 09:00–10:00 in Udon Thani (tomorrow) · 1 h.
- 05Weekend
Chicago: Saturday and Sunday
Udon Thani: Saturday and Sunday
24 hours
A day in Chicago, in Udon Thani
| Chicago | Udon Thani | Working hours, evening, night or weekend in each place |
|---|---|---|
| 00:00 | 12:00 | |
| 01:00 | 13:00 | |
| 02:00 | 14:00 | |
| 03:00 | 15:00 | |
| 04:00 | 16:00 | |
| 05:00 | 17:00 | |
| 06:00 | 18:00 | |
| 07:00 | 19:00 | |
| 08:00 | 20:00 | |
| 09:00 | 21:00 | |
| 10:00 | 22:00 | |
| 11:00 | 23:00 | |
| 12:00 | 00:00Tomorrow | |
| 13:00 | 01:00Tomorrow | |
| 14:00 | 02:00Tomorrow | |
| 15:00 | 03:00Tomorrow | |
| 16:00 | 04:00Tomorrow | |
| 17:00 | 05:00Tomorrow | |
| 18:00 | 06:00Tomorrow | |
| 19:00 | 07:00Tomorrow | |
| 20:00 | 08:00Tomorrow | |
| 21:00 | 09:00Tomorrow | |
| 22:00 | 10:00Tomorrow | |
| 23:00 | 11:00Tomorrow |
Working hoursEarly or eveningNightWeekend
Plan a meeting: Chicago and Udon Thani
More time differences with Chicago
Questions
Asked about Chicago and Udon Thani
What is the time difference between Chicago and Udon Thani?
Udon Thani is 12 hours ahead of Chicago. This holds until 1 November 2026; then Udon Thani is 13 hours ahead of Chicago.
What is the best time for a call between Chicago and Udon Thani?
No shared office hours. The least awkward windows, early or late for one side: Mon–Fri: 09:00–10:00 in Chicago = 21:00–22:00 in Udon Thani · 1 h; Mon–Thu: 21:00–22:00 in Chicago = 09:00–10:00 in Udon Thani (tomorrow) · 1 h.
When does the time difference between Chicago and Udon Thani change?
In the next 12 months it changes on: 1 November 2026 (+13 h); 14 March 2027 (+12 h).