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Boulder, Colorado, USA — Sunrise, Sunset, and Daylength, September 2019

Daylight

5:39 am – 8:16 pm
14 hours, 37 minutes

Current Time: May 23, 2019 at 9:11:49 pm

Sun Direction: 308° Northwest

Sun Altitude: -9.7°

Sun Distance: 94.123 million mi


Next Solstice: Jun 21, 2019 9:54 am (Summer)

Sunrise Today: 5:39 am 62° Northeast

Sunset Today: 8:16 pm 298° Northwest

Location of BoulderLocation
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2019 Sun Graph for Boulder

September 2019 — Sun in Boulder

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2019Sunrise/SunsetDaylengthAstronomical TwilightNautical TwilightCivil TwilightSolar Noon
SepSunriseSunsetLengthDifferenceStartEndStartEndStartEndTimeMil. mi
16:28 am (78°)7:32 pm (281°)13:04:03−2:314:53 am9:07 pm5:27 am8:33 pm6:00 am8:00 pm1:01 pm (58.2°)93.816
26:29 am (79°)7:31 pm (281°)13:01:31−2:314:54 am9:06 pm5:28 am8:31 pm6:01 am7:58 pm1:00 pm (57.8°)93.794
36:30 am (79°)7:29 pm (280°)12:58:59−2:324:55 am9:04 pm5:29 am8:30 pm6:02 am7:57 pm1:00 pm (57.4°)93.771
46:31 am (80°)7:27 pm (280°)12:56:26−2:324:56 am9:02 pm5:30 am8:28 pm6:03 am7:55 pm1:00 pm (57.1°)93.747
56:32 am (80°)7:26 pm (279°)12:53:53−2:324:58 am9:00 pm5:32 am8:26 pm6:04 am7:53 pm12:59 pm (56.7°)93.724
66:33 am (81°)7:24 pm (279°)12:51:20−2:334:59 am8:58 pm5:33 am8:24 pm6:05 am7:52 pm12:59 pm (56.3°)93.700
76:34 am (81°)7:23 pm (278°)12:48:46−2:335:00 am8:56 pm5:34 am8:23 pm6:06 am7:50 pm12:59 pm (56.0°)93.676
86:35 am (82°)7:21 pm (278°)12:46:12−2:335:01 am8:54 pm5:35 am8:21 pm6:07 am7:48 pm12:58 pm (55.6°)93.652
96:36 am (82°)7:19 pm (277°)12:43:38−2:345:02 am8:52 pm5:36 am8:19 pm6:08 am7:47 pm12:58 pm (55.2°)93.628
106:37 am (83°)7:18 pm (277°)12:41:04−2:345:04 am8:51 pm5:37 am8:17 pm6:09 am7:45 pm12:58 pm (54.8°)93.603
116:38 am (83°)7:16 pm (276°)12:38:29−2:345:05 am8:49 pm5:38 am8:16 pm6:10 am7:43 pm12:57 pm (54.4°)93.579
126:39 am (84°)7:14 pm (276°)12:35:54−2:355:06 am8:47 pm5:39 am8:14 pm6:11 am7:42 pm12:57 pm (54.1°)93.554
136:39 am (84°)7:13 pm (275°)12:33:18−2:355:07 am8:45 pm5:40 am8:12 pm6:12 am7:40 pm12:56 pm (53.7°)93.529
146:40 am (85°)7:11 pm (275°)12:30:43−2:355:08 am8:43 pm5:41 am8:10 pm6:13 am7:38 pm12:56 pm (53.3°)93.504
156:41 am (85°)7:09 pm (274°)12:28:07−2:355:09 am8:41 pm5:42 am8:09 pm6:14 am7:37 pm12:56 pm (52.9°)93.480
166:42 am (86°)7:08 pm (274°)12:25:31−2:355:10 am8:39 pm5:43 am8:07 pm6:15 am7:35 pm12:55 pm (52.5°)93.455
176:43 am (86°)7:06 pm (273°)12:22:55−2:365:12 am8:38 pm5:44 am8:05 pm6:16 am7:33 pm12:55 pm (52.1°)93.430
186:44 am (87°)7:05 pm (273°)12:20:19−2:365:13 am8:36 pm5:45 am8:03 pm6:17 am7:32 pm12:55 pm (51.8°)93.405
196:45 am (87°)7:03 pm (272°)12:17:43−2:365:14 am8:34 pm5:46 am8:02 pm6:18 am7:30 pm12:54 pm (51.4°)93.380
206:46 am (88°)7:01 pm (272°)12:15:06−2:365:15 am8:32 pm5:47 am8:00 pm6:19 am7:28 pm12:54 pm (51.0°)93.355
216:47 am (88°)7:00 pm (271°)12:12:30−2:365:16 am8:30 pm5:48 am7:58 pm6:20 am7:27 pm12:54 pm (50.6°)93.329
226:48 am (89°)6:58 pm (271°)12:09:53−2:365:17 am8:29 pm5:49 am7:56 pm6:21 am7:25 pm12:53 pm (50.2°)93.304
236:49 am (89°)6:56 pm (270°)12:07:16−2:365:18 am8:27 pm5:50 am7:55 pm6:22 am7:23 pm12:53 pm (49.8°)93.279
246:50 am (90°)6:55 pm (270°)12:04:40−2:365:19 am8:25 pm5:51 am7:53 pm6:23 am7:22 pm12:53 pm (49.4°)93.253
256:51 am (90°)6:53 pm (269°)12:02:03−2:365:20 am8:23 pm5:52 am7:51 pm6:24 am7:20 pm12:52 pm (49.0°)93.227
266:52 am (91°)6:51 pm (269°)11:59:26−2:365:21 am8:22 pm5:53 am7:50 pm6:25 am7:18 pm12:52 pm (48.7°)93.201
276:53 am (91°)6:50 pm (268°)11:56:50−2:365:22 am8:20 pm5:54 am7:48 pm6:26 am7:17 pm12:52 pm (48.3°)93.175
286:54 am (92°)6:48 pm (268°)11:54:13−2:365:23 am8:18 pm5:55 am7:46 pm6:27 am7:15 pm12:51 pm (47.9°)93.149
296:55 am (92°)6:46 pm (267°)11:51:36−2:365:24 am8:16 pm5:56 am7:45 pm6:28 am7:13 pm12:51 pm (47.5°)93.122
306:56 am (93°)6:45 pm (267°)11:49:00−2:365:25 am8:15 pm5:57 am7:43 pm6:29 am7:12 pm12:51 pm (47.1°)93.095
* All times are local time for Boulder. Time is adjusted for DST when applicable. They take into account refraction. Dates are based on the Gregorian calendar.

September Equinox (Autumnal Equinox) is on Monday, September 23, 2019 at 1:50 am in Boulder.
Why is the day and night not exactly 12 hours on Equinox?

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