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