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