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