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