Sunrise and sunset in Cook County

Cook County Sunrise, Sunset and Moon in September 2026

Local time (CDT)

Day length goes from 13 h 22 min on September 1 to 11 h 43 min on September 30. Sunrise moves from 6:21 AM to 7:00 AM and sunset from 7:43 PM to 6:43 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
Sep 15:49 AM6:21 AM7:43 PM8:15 PM7:01 PM9:35 PM13 h 22 minWaning gibbous, 78%9:10 PM11:44 AM
Sep 25:50 AM6:22 AM7:41 PM8:13 PM7:00 PM9:32 PM13 h 19 min-3.0 minWaning gibbous, 68%9:40 PM1:06 PM
Sep 35:51 AM6:23 AM7:39 PM8:10 PM6:58 PM9:30 PM13 h 16 min-3.0 minLast quarter, 58%10:19 PM2:26 PM
Sep 45:53 AM6:25 AM7:37 PM8:08 PM6:56 PM9:27 PM13 h 12 min-4.0 minLast quarter 2:51 AM11:13 PM3:40 PM
Sep 55:54 AM6:26 AM7:35 PM8:06 PM6:54 PM9:25 PM13 h 09 min-3.0 minWaning crescent, 37%4:42 PM
Sep 65:56 AM6:27 AM7:33 PM8:04 PM6:52 PM9:22 PM13 h 06 min-3.0 minWaning crescent, 27%12:23 AM5:28 PM
Sep 75:57 AM6:29 AM7:31 PM8:02 PM6:50 PM9:20 PM13 h 02 min-4.0 minWaning crescent, 18%1:43 AM6:03 PM
Sep 85:59 AM6:30 AM7:29 PM8:00 PM6:48 PM9:17 PM12 h 59 min-3.0 minWaning crescent, 11%3:07 AM6:29 PM
Sep 96:00 AM6:31 AM7:27 PM7:58 PM6:46 PM9:15 PM12 h 56 min-3.0 minWaning crescent, 5%4:31 AM6:49 PM
Sep 106:01 AM6:33 AM7:24 PM7:56 PM6:44 PM9:13 PM12 h 51 min-5.0 minNew moon 10:27 PM5:52 AM7:07 PM
Sep 116:03 AM6:34 AM7:22 PM7:54 PM6:42 PM9:10 PM12 h 48 min-3.0 minNew moon, 0%7:10 AM7:23 PM
Sep 126:04 AM6:35 AM7:20 PM7:52 PM6:40 PM9:08 PM12 h 45 min-3.0 minNew moon, 1%8:26 AM7:39 PM
Sep 136:06 AM6:37 AM7:18 PM7:49 PM6:38 PM9:05 PM12 h 41 min-4.0 minWaxing crescent, 4%9:40 AM7:57 PM
Sep 146:07 AM6:38 AM7:16 PM7:47 PM6:36 PM9:03 PM12 h 38 min-3.0 minWaxing crescent, 9%10:54 AM8:17 PM
Sep 156:08 AM6:40 AM7:14 PM7:45 PM6:33 PM9:00 PM12 h 34 min-4.0 minWaxing crescent, 16%12:07 PM8:41 PM
Sep 166:10 AM6:41 AM7:12 PM7:43 PM6:31 PM8:58 PM12 h 31 min-3.0 minWaxing crescent, 24%1:17 PM9:13 PM
Sep 176:11 AM6:42 AM7:10 PM7:41 PM6:29 PM8:56 PM12 h 28 min-3.0 minWaxing crescent, 34%2:22 PM9:53 PM
Sep 186:13 AM6:44 AM7:08 PM7:39 PM6:27 PM8:53 PM12 h 24 min-4.0 minFirst quarter 3:43 PM3:18 PM10:43 PM
Sep 196:14 AM6:45 AM7:06 PM7:37 PM6:25 PM8:51 PM12 h 21 min-3.0 minFirst quarter, 55%4:03 PM11:43 PM
Sep 206:15 AM6:46 AM7:04 PM7:35 PM6:23 PM8:49 PM12 h 18 min-3.0 minWaxing gibbous, 65%4:39 PM
Sep 216:17 AM6:48 AM7:02 PM7:33 PM6:21 PM8:46 PM12 h 14 min-4.0 minWaxing gibbous, 75%5:07 PM12:49 AM
Sep 226:18 AM6:49 AM7:00 PM7:31 PM6:19 PM8:44 PM12 h 11 min-3.0 minWaxing gibbous, 84%5:29 PM1:59 AM
Sep 236:20 AM6:50 AM6:58 PM7:28 PM6:17 PM8:42 PM12 h 08 min-3.0 minWaxing gibbous, 91%5:48 PM3:11 AM
Sep 246:21 AM6:52 AM6:56 PM7:26 PM6:15 PM8:40 PM12 h 04 min-4.0 minWaxing gibbous, 96%6:04 PM4:24 AM
Sep 256:22 AM6:53 AM6:54 PM7:24 PM6:13 PM8:37 PM12 h 01 min-3.0 minFull moon, 99%6:20 PM5:37 AM
Sep 266:24 AM6:55 AM6:51 PM7:22 PM6:11 PM8:35 PM11 h 56 min-5.0 minFull moon 11:49 AM6:36 PM6:51 AM
Sep 276:25 AM6:56 AM6:49 PM7:20 PM6:09 PM8:33 PM11 h 53 min-3.0 minWaning gibbous, 99%6:54 PM8:08 AM
Sep 286:26 AM6:57 AM6:47 PM7:18 PM6:06 PM8:31 PM11 h 50 min-3.0 minWaning gibbous, 95%7:15 PM9:28 AM
Sep 296:28 AM6:59 AM6:45 PM7:16 PM6:04 PM8:29 PM11 h 46 min-4.0 minWaning gibbous, 90%7:43 PM10:51 AM
Sep 306:29 AM7:00 AM6:43 PM7:14 PM6:02 PM8:26 PM11 h 43 min-3.0 minWaning gibbous, 82%8:19 PM12:14 PM

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.