Time in Oak Brook, Illinois now
Oak Brook is in Illinois and uses Central Time. The clock on this page is live, and the times below are worked out for the coordinates of Oak Brook.
- State
- Illinois
- Time zone
- Central Time
- Offset from UTC now
- Daylight saving time
- Yes, 8 Mar to 1 Nov
- Population
- 8,091
- Coordinates
- 41.8328° N, 87.9290° W
Sunrise and sunset in Oak Brook.
Worked out for 41.8328° N, 87.9290° W from the position of the sun, and updated every minute. On the longest day of 2026 the sun is up in Oak Brook for 15h 13m, and on the shortest day for 9h 8m.
- Sunrise
- Sunset
- Day length
- Solar noon
- Moon phase
- Moon lit
Oak Brook compared with other cities.
How the clock in Oak Brook lines up with the rest of the United States and a few cities around the world, right now.
| City | Time zone | Local time | From Oak Brook |
|---|---|---|---|
| New York | Eastern Time | --:-- | |
| Chicago | Central Time | --:-- | |
| Denver | Mountain Time | --:-- | |
| Phoenix | Mountain Time without daylight saving | --:-- | |
| Los Angeles | Pacific Time | --:-- | |
| Honolulu | Hawaii-Aleutian Time | --:-- | |
| London | United Kingdom | --:-- | |
| Dubai | United Arab Emirates | --:-- | |
| Tokyo | Japan | --:-- | |
| Sydney | Australia | --:-- |
Time in places near Oak Brook.
The closest places listed for Illinois, with the distance from Oak Brook and their local time. See every place on the Illinois page.
When the clocks change in Oak Brook.
Oak Brook follows the national rules: clocks go forward one hour on the second Sunday of March and back one hour on the first Sunday of November, at 2:00 local time.
- 8 March 2026 Clocks go forward 1 hour Daylight saving time starts at 2:00 local time
- 1 November 2026 Clocks go back 1 hour Daylight saving time ends at 2:00 local time
- 14 March 2027 Clocks go forward 1 hour Daylight saving time starts at 2:00 local time
- 7 November 2027 Clocks go back 1 hour Daylight saving time ends at 2:00 local time
Sunrise and sunset above move with the clock change, so evenings are an hour lighter from Sunday, 8 March 2026.
Quick answers about time in Oak Brook.
Short answers about the time zone, sunrise, clock changes and neighbours of Oak Brook.
01
What time is it in Oak Brook right now?
Oak Brook is on Central Time, UTC-6, and UTC-5 during daylight saving time. The clock at the top of this page shows the current local time and updates every minute.
02
What time zone is Oak Brook in?
Oak Brook uses Central Time, the same zone as the rest of Illinois in most cases. The Illinois page shows every zone used in the state.
03
Does Oak Brook observe daylight saving time?
Yes. Clocks in Oak Brook go forward one hour on Sunday, 8 March 2026 and back one hour on Sunday, 1 November 2026, both at 2:00 local time.
04
What time does the sun rise in Oak Brook?
Today's sunrise and sunset are shown live on this page. On the longest day of 2026 the sun rises at 05:16 and sets at 20:30, and on the shortest day it rises at 07:15 and sets at 16:23.
05
How long is the longest day in Oak Brook?
The sun is up for 15h 13m on the June solstice and for 9h 8m on the December solstice. Day length changes fastest around the equinoxes in March and September.
06
What is the time difference between Oak Brook and New York?
Oak Brook is 1 hour behind New York all year.
07
What is the time difference between Oak Brook and London?
Oak Brook is 6 hours behind London for most of the year. The gap changes for a few weeks each spring and autumn, because the United States and the United Kingdom change their clocks on different dates.
08
How many people live in Oak Brook?
Oak Brook has about 8,091 people, which makes it one of the places listed for Illinois on Time Dates. Population figures come from GeoNames.
09
Where is Oak Brook?
Oak Brook sits at 41.8328° N, 87.9290° W in Illinois, about 14 miles from Chicago.
10
Which places are closest to Oak Brook?
The closest places listed are Western Springs, 2 miles away, Hinsdale, 2 miles away and Westchester, 3 miles away. Each one shows its own local time on this page.