Offset
The time difference between Chicago and Oslo is 7 hours.
Chicago (CDT) is behind Oslo (CEST).
CDT: UTC-5
CEST: UTC+2
Both zones are currently observing daylight saving time.
When to schedule
Business-hours overlap: 9 AM–10 AM in Chicago (4 PM–5 PM in Oslo).
Both teams are in working hours during this window on weekdays.
Suggested time: 9:00 AM Chicago (4:00 PM Oslo).
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
Norway
- New Year's DayThu, Jan 1
- Maundy ThursdayThu, Apr 2
- Good FridayFri, Apr 3
- Easter SundaySun, Apr 5
- Easter MondayMon, Apr 6
- Labour DayFri, May 1
- Ascension DayThu, May 14
- Constitution DaySun, May 17
- PentecostSun, May 24
- Whit MondayMon, May 25
- Christmas DayFri, Dec 25
- St. Stephen's DaySat, Dec 26
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Chicago | Oslo | Day |
|---|---|---|
| 12:00 am | 7:00 am | Same day |
| 1:00 am | 8:00 am | Same day |
| 2:00 am | 9:00 am | Same day |
| 3:00 am | 10:00 am | Same day |
| 4:00 am | 11:00 am | Same day |
| 5:00 am | 12:00 pm | Same day |
| 6:00 am | 1:00 pm | Same day |
| 7:00 am | 2:00 pm | Same day |
| 8:00 am | 3:00 pm | Same day |
| 9:00 am | 4:00 pm | Same day |
| 10:00 am | 5:00 pm | Same day |
| 11:00 am | 6:00 pm | Same day |
| 12:00 pm | 7:00 pm | Same day |
| 1:00 pm | 8:00 pm | Same day |
| 2:00 pm | 9:00 pm | Same day |
| 3:00 pm | 10:00 pm | Same day |
| 4:00 pm | 11:00 pm | Same day |
| 5:00 pm | 12:00 am | +1 day |
| 6:00 pm | 1:00 am | +1 day |
| 7:00 pm | 2:00 am | +1 day |
| 8:00 pm | 3:00 am | +1 day |
| 9:00 pm | 4:00 am | +1 day |
| 10:00 pm | 5:00 am | +1 day |
| 11:00 pm | 6:00 am | +1 day |
Daylight saving time
Both zones observe daylight saving time, but they transition on different dates.
Chicago: next transition on Sunday, November 1, 2026.
Oslo: next transition on Sunday, October 25, 2026.
For approximately 7 days between transitions, the offset between Chicago and Oslo differs from its typical value. Recurring meetings during this window will shift by one hour.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:17 AM
- Sunset
- 8:24 PM
- Day length
- 15h 7m
- Sunrise
- 4:00 AM
- Sunset
- 10:34 PM
- Day length
- 18h 34m
Cities in these zones
Other cities in Central Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Central Time
- GYY
- MDW
- ORD
- HOU
- IAH
- SAT
- DAL
- DFW
- AUS
- BNA
Airports in Central European Time
- OSL
Related conversions
Common conversions
- What is 9:00 am Chicago in Oslo?
- 9:00 am Chicago is 4:00 pm Oslo.
- What is 12:00 pm Chicago in Oslo?
- 12:00 pm Chicago is 7:00 pm Oslo.
- What is 12:30 pm Chicago in Oslo?
- 12:30 pm Chicago is 7:30 pm Oslo.
- What is 2:00 pm Chicago in Oslo?
- 2:00 pm Chicago is 9:00 pm Oslo.
- What is 5:00 pm Chicago in Oslo?
- 5:00 pm Chicago is 12:00 am Oslo, the next day.
- What is 11:30 pm Chicago in Oslo?
- 11:30 pm Chicago is 6:30 am Oslo, the next day.