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