Time difference
Calgary to Chicago Time Difference
Chicago is 1 hour ahead of Calgary — when it's 12:00 PM in Calgary, it's 1:00 PM in Chicago. (Calgary (America/Edmonton, MDT); Chicago (America/Chicago, CDT).) Below: live local times, the best hours for a call, a full conversion table, and exact daylight-saving dates.
Chicago is 1 hour ahead of Calgary. The best window for a call is 9 AM–4 PM in Calgary, which is 10 AM–5 PM in Chicago — a 7-hour overlap inside 9 AM–5 PM on both sides. Calgary and Chicago change their clocks together (or don't change at all), so the time difference between them stays the same all year.
- When it's 9:00 AM in Calgary, it's 10:00 AM in Chicago.
- When it's 9:00 AM in Chicago, it's 8:00 AM in Calgary.
Chicago is currently 1 hour ahead of Calgary.
Interactive converter
12:00PM
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Best times to meet
The 9 AM – 5 PM business windows in Calgary and Chicago overlap for 7 hours. 9 AM–4 PM in Calgary is 10 AM–5 PM in Chicago. Aim somewhere in the middle of that window so neither side starts cold or finishes drained.
Quick conversion table
| Calgary | Chicago |
|---|---|
| 12 AM | 1:00 AM |
| 1 AM | 2:00 AM |
| 2 AM | 3:00 AM |
| 3 AM | 4:00 AM |
| 4 AM | 5:00 AM |
| 5 AM | 6:00 AM |
| 6 AM | 7:00 AM |
| 7 AM | 8:00 AM |
| 8 AM | 9:00 AM |
| 9 AM | 10:00 AM |
| 10 AM | 11:00 AM |
| 11 AM | 12:00 PM |
| 12 PM | 1:00 PM |
| 1 PM | 2:00 PM |
| 2 PM | 3:00 PM |
| 3 PM | 4:00 PM |
| 4 PM | 5:00 PM |
| 5 PM | 6:00 PM |
| 6 PM | 7:00 PM |
| 7 PM | 8:00 PM |
| 8 PM | 9:00 PM |
| 9 PM | 10:00 PM |
| 10 PM | 11:00 PM |
| 11 PM | 12:00 AM (next day) |
Daylight saving
On November 1, 2026, both Calgary and Chicago shift for daylight saving. After that, Chicago will be 1 hour ahead of Calgary (currently 1 hour ahead of Calgary). The converter and the tables above always reflect the correct offset for the date you pick.
- Calgary is currently observing daylight saving time.
- Chicago is currently observing daylight saving time.
Frequently asked questions
- Is Chicago ahead of or behind Calgary?
- Chicago is 1 hour ahead of Calgary.
- How many hours ahead of Calgary is Chicago?
- Chicago is 1 hour ahead of Calgary.
- What time is 9 AM in Calgary in Chicago?
- 9:00 AM in Calgary is 10:00 AM in Chicago.
- What time is noon in Calgary in Chicago?
- 12:00 PM in Calgary is 1:00 PM in Chicago.
- What time is 5 PM in Calgary in Chicago?
- 5:00 PM in Calgary is 6:00 PM in Chicago. Useful for end-of-day handoffs between the two offices.
- What time is 3 PM in Calgary in Chicago?
- 3:00 PM in Calgary is 4:00 PM in Chicago.
- Is Calgary currently observing daylight saving time?
- Calgary is currently observing daylight saving time (summer time).
- Is Chicago currently observing daylight saving time?
- Chicago is currently observing daylight saving time (summer time).
- Do Calgary and Chicago observe daylight saving?
- On November 1, 2026, both Calgary and Chicago shift for daylight saving. After that, Chicago will be 1 hour ahead of Calgary (currently 1 hour ahead of Calgary). The converter and the tables above always reflect the correct offset for the date you pick.
- When is the best time to call Chicago from Calgary?
- Aim for 9 AM–4 PM in Calgary, which is 10 AM–5 PM in Chicago.
- When is the best time to call Calgary from Chicago?
- Aim for 10 AM–5 PM in Chicago, which is 9 AM–4 PM in Calgary.
- Calgary (MDT) to Chicago (CDT) — how do I convert quickly?
- Add 1 hour to Calgary local time to get Chicago local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.
Other conversions
- Calgary to New York
- Calgary to London
- Calgary to Tokyo
- Calgary to Dubai
- Calgary to Singapore
- Calgary to Los Angeles
- Calgary to Sydney
- Calgary to Paris
- Calgary to Mumbai
- Calgary to Hong Kong