Sunrise and sunset in Cook County

Cook County Sunrise, Sunset and Moon in August 2026

Local time (CDT)

Day length goes from 14 h 58 min on August 1 to 13 h 26 min on August 31. Sunrise moves from 5:39 AM to 6:19 AM and sunset from 8:37 PM to 7:45 PM.

Every day

Dawn and dusk are civil twilight (the sun 6 degrees below the horizon); golden hour starts when the evening sun is 6 degrees up; full dark is astronomical twilight, 18 degrees down. A blank moonrise or moonset means it falls on the next day.

DateDawnSunriseSunsetDuskGolden hourFull darkDay lengthChangeMoonMoonriseMoonset
Aug 15:03 AM5:39 AM8:37 PM9:13 PM7:52 PM10:56 PM14 h 58 minWaning gibbous, 89%9:51 PM8:54 AM
Aug 25:04 AM5:40 AM8:36 PM9:12 PM7:51 PM10:53 PM14 h 56 min-2.0 minWaning gibbous, 82%10:06 PM10:06 AM
Aug 35:06 AM5:42 AM8:34 PM9:10 PM7:50 PM10:50 PM14 h 52 min-4.0 minWaning gibbous, 73%10:22 PM11:19 AM
Aug 45:07 AM5:43 AM8:33 PM9:08 PM7:49 PM10:48 PM14 h 50 min-2.0 minWaning gibbous, 63%10:41 PM12:36 PM
Aug 55:09 AM5:44 AM8:31 PM9:07 PM7:47 PM10:45 PM14 h 47 min-3.0 minLast quarter 9:21 PM11:05 PM1:56 PM
Aug 65:10 AM5:46 AM8:30 PM9:05 PM7:46 PM10:42 PM14 h 44 min-3.0 minLast quarter, 42%11:38 PM3:18 PM
Aug 75:12 AM5:47 AM8:28 PM9:03 PM7:44 PM10:40 PM14 h 41 min-3.0 minWaning crescent, 32%4:38 PM
Aug 85:13 AM5:48 AM8:26 PM9:01 PM7:43 PM10:37 PM14 h 38 min-3.0 minWaning crescent, 22%12:23 AM5:51 PM
Aug 95:15 AM5:50 AM8:25 PM9:00 PM7:41 PM10:35 PM14 h 35 min-3.0 minWaning crescent, 14%1:24 AM6:48 PM
Aug 105:16 AM5:51 AM8:23 PM8:58 PM7:40 PM10:32 PM14 h 32 min-3.0 minWaning crescent, 8%2:41 AM7:31 PM
Aug 115:18 AM5:52 AM8:22 PM8:56 PM7:38 PM10:29 PM14 h 30 min-2.0 minWaning crescent, 3%4:06 AM8:03 PM
Aug 125:19 AM5:54 AM8:20 PM8:54 PM7:37 PM10:27 PM14 h 26 min-4.0 minNew moon 12:37 PM5:33 AM8:27 PM
Aug 135:21 AM5:55 AM8:18 PM8:52 PM7:35 PM10:24 PM14 h 23 min-3.0 minNew moon, 0%6:57 AM8:46 PM
Aug 145:22 AM5:56 AM8:16 PM8:50 PM7:34 PM10:21 PM14 h 20 min-3.0 minWaxing crescent, 2%8:17 AM9:03 PM
Aug 155:24 AM5:58 AM8:15 PM8:49 PM7:32 PM10:19 PM14 h 17 min-3.0 minWaxing crescent, 6%9:34 AM9:18 PM
Aug 165:25 AM5:59 AM8:13 PM8:47 PM7:30 PM10:16 PM14 h 14 min-3.0 minWaxing crescent, 12%10:49 AM9:35 PM
Aug 175:27 AM6:00 AM8:11 PM8:45 PM7:29 PM10:14 PM14 h 11 min-3.0 minWaxing crescent, 20%12:02 PM9:53 PM
Aug 185:28 AM6:02 AM8:09 PM8:43 PM7:27 PM10:11 PM14 h 07 min-4.0 minWaxing crescent, 29%1:14 PM10:14 PM
Aug 195:29 AM6:03 AM8:08 PM8:41 PM7:25 PM10:08 PM14 h 05 min-2.0 minFirst quarter 9:46 PM2:25 PM10:41 PM
Aug 205:31 AM6:04 AM8:06 PM8:39 PM7:24 PM10:06 PM14 h 02 min-3.0 minFirst quarter, 50%3:33 PM11:15 PM
Aug 215:32 AM6:06 AM8:04 PM8:37 PM7:22 PM10:03 PM13 h 58 min-4.0 minWaxing gibbous, 61%4:34 PM11:59 PM
Aug 225:34 AM6:07 AM8:02 PM8:35 PM7:20 PM10:00 PM13 h 55 min-3.0 minWaxing gibbous, 71%5:25 PM
Aug 235:35 AM6:08 AM8:00 PM8:33 PM7:18 PM9:58 PM13 h 52 min-3.0 minWaxing gibbous, 80%6:07 PM12:54 AM
Aug 245:37 AM6:10 AM7:58 PM8:31 PM7:16 PM9:55 PM13 h 48 min-4.0 minWaxing gibbous, 88%6:39 PM1:57 AM
Aug 255:38 AM6:11 AM7:56 PM8:29 PM7:15 PM9:53 PM13 h 45 min-3.0 minWaxing gibbous, 94%7:05 PM3:05 AM
Aug 265:40 AM6:12 AM7:54 PM8:27 PM7:13 PM9:50 PM13 h 42 min-3.0 minWaxing gibbous, 98%7:25 PM4:17 AM
Aug 275:41 AM6:14 AM7:52 PM8:25 PM7:11 PM9:48 PM13 h 38 min-4.0 minFull moon 11:18 PM7:43 PM5:29 AM
Aug 285:43 AM6:15 AM7:51 PM8:23 PM7:09 PM9:45 PM13 h 36 min-2.0 minFull moon, 100%7:59 PM6:42 AM
Aug 295:44 AM6:17 AM7:49 PM8:21 PM7:07 PM9:42 PM13 h 32 min-4.0 minWaning gibbous, 97%8:14 PM7:54 AM
Aug 305:46 AM6:18 AM7:47 PM8:19 PM7:05 PM9:40 PM13 h 29 min-3.0 minWaning gibbous, 92%8:30 PM9:08 AM
Aug 315:47 AM6:19 AM7:45 PM8:17 PM7:03 PM9:37 PM13 h 26 min-3.0 minWaning gibbous, 86%8:48 PM10:25 AM

Other months

More

Sources

Computed with the NOAA solar position equations and the lunar methods of Meeus, Astronomical Algorithms, for a flat horizon; hills and buildings delay a real sunrise.