Current Time in Cook County, Illinois, United States
| 📍 Location | Cook County, Illinois, United States |
| 🌏 Country | 🇺🇸 United States |
| ⏲️ Timezone | America/Chicago |
| 📐 Coordinates | 41.8954° N, 87.6462° W |
| 👥 Population | 5,194,675 approx. |
| 💵 Currency | US Dollar ($) |
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Sunrise & Sunset TodayMonday, April 27, 2026
| Event | Time |
|---|---|
| 🌌 Astronomical Dawn | 04:06 AM |
| 🌊 Nautical Dawn | 04:46 AM |
| 🌄 Civil Dawn | 05:22 AM |
| 🌅 Sunrise | 05:52 AM |
| 📸 Golden Hour AM | 05:52 AM – 06:31 AM |
| ☀ Solar Noon | 12:48 PM |
| 📸 Golden Hour PM | 07:05 PM – 07:43 PM |
| 🌇 Sunset | 07:43 PM |
| 🌆 Civil Dusk | 08:13 PM |
| 🌊 Nautical Dusk | 08:50 PM |
| 🌌 Astronomical Dusk | 09:29 PM |
| ⏱️ Day Length | 13h 51m |
Moon Phase TodayMonday, April 27, 2026
Upcoming Moon Phases
| Phase | Date | Time |
|---|---|---|
| 🌕 Full Moon | 2026-05-01 | 12:23 |
| 🌗 Last Quarter | 2026-05-09 | 16:20 |
| 🌑 New Moon | 2026-05-16 | 15:02 |
| 🌓 First Quarter | 2026-05-23 | 06:02 |
Local Business HoursCook County
| 🏢 Office Hours | 09:00-17:00 | 🔴 Closed |
| 🏦 Bank Hours | 09:00-17:00 | 🔴 Closed |
| 🛒 Shop Hours | 09:00-21:00 | 🔴 Closed |
| 📅 Weekend | Saturday,Sunday | ✅ Weekday |
Emergency NumbersCook County
Time Difference with World CitiesCook County vs major cities
Phone & Country InfoUnited States
Daylight Hours by MonthCook County · 2026
Today (April 27) has13h 51mof daylight in Cook County.
View full yearly sunrise & sunset calendar →Frequently Asked QuestionsTime & location — Cook County, Illinois, United States
The current local time in Cook County, Illinois, United States is 2:12 AM on Monday, April 27, 2026. The timezone is America/Chicago (UTCUTC-05:00, CDT).
Cook County, Illinois, United States observes the America/Chicago timezone, which is UTCUTC-05:00. The timezone abbreviation is CDT.
No, Cook County, Illinois, United States is not currently observing Daylight Saving Time. Standard time is in effect.
Today in Cook County, Illinois, United States, the sun rises at 05:52 AM and sets at 07:43 PM, giving 13h 51m of daylight (April 27, 2026).
Today's moon phase in Cook County, Illinois, United States is Waxing Gibbous, 82% illuminated (April 27, 2026). Moonrise: 15:57. Moonset: 03:55.
The international dialing code (country code) for United States is +1. The internet country-code top-level domain is .us. A typical phone number format is: (XXX) XXX-XXXX.
The population of Cook County is approximately 5.2 million people.