Observatory log
Chicago and Chon Buri, compared
- 01Difference now
Chon Buri is 12 hours ahead of Chicago.
Chicago: CDT (UTC−5) · Chon Buri: UTC+7 (UTC+7)
Next changeFrom 1 November 2026: Chon Buri 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 Chon Buri 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 Chon Buri
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 Chon Buri (tomorrow) · 1 h.
- 05Weekend
Chicago: Saturday and Sunday
Chon Buri: Saturday and Sunday
24 hours
A day in Chicago, in Chon Buri
| Chicago | Chon Buri | 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 Chon Buri
More time differences with Chicago
Questions
Asked about Chicago and Chon Buri
What is the time difference between Chicago and Chon Buri?
Chon Buri is 12 hours ahead of Chicago. This holds until 1 November 2026; then Chon Buri is 13 hours ahead of Chicago.
What is the best time for a call between Chicago and Chon Buri?
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 Chon Buri · 1 h; Mon–Thu: 21:00–22:00 in Chicago = 09:00–10:00 in Chon Buri (tomorrow) · 1 h.
When does the time difference between Chicago and Chon Buri change?
In the next 12 months it changes on: 1 November 2026 (+13 h); 14 March 2027 (+12 h).