The Daily Parker

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Sunrise chart for Chicago, 2007

It's time to update the sunrise chart. (You can get one for your own location at http://www.wx-now.com/Sunrise/SunriseChart.aspx.)

Notice that in 2007, Daylight Saving Time lasts a lot longer than in years past: from the second Sunday in March through the first Sunday in November. This actually makes the autumn a little darker, as you can see from the chart.

Date Significance Sunrise Sunset Daylight
2007
4 Jan Latest sunrise until Oct 30 07:19 16:33 9:13
28 Jan 5pm sunset 07:08 17:00 9:52
5 Feb 7am sunrise 06:59 17:10 10:10
20 Feb 5:30pm sunset 06:40 17:30 10:49
27 Feb 6:30am sunrise 06:29 17:38 11:08
10 Mar Earliest sunrise until April 15th
Earliest sunset until Oct 28th
06:11 17:51 11:39
11 Mar Daylight savings time begins
Latest sunrise until Oct 21st
07:10 18:52 11:42
17 Mar 7am sunrise 07:00 18:59 11:59
18 Mar 12-hour day 06:58 19:00 12:02
21 Mar Equinox, 00:07 (Mar 21) UTC (19:07 CDT) 06:53 19:04 12:11
3 Apr 6:30am sunrise (again) 06:30 19:18 12:47
13 Apr 7:30pm sunset 06:15 19:30 13:15
22 Apr 6am sunrise 06:00 19:40 13:39
10 May 8pm sunset 05:35 20:00 14:25
16 May 5:30am sunrise 05:30 20:04 14:34
15 Jun Earliest sunrises of the year 05:14 20:28 15:13
19 Jun 8:30pm sunset 05:15 20:30 15:14
21 Jun Solstice, 18:06 UTC (13:06 CDT) 05:15 20:30 15:15
27 Jun Latest sunset of the year 05:17 20:31 15:13
1 Jul 8:30pm sunset 05:19 20:30 15:11
17 Jul 5:30am sunrise 05:30 20:24 14:54
9 Aug 8pm sunset 05:52 20:00 14:08
17 Aug 6am sunrise 06:00 19:49 13:48
29 Aug 7:30pm sunset 06:13 19:30 13:17
15 Sep 6:30am sunrise; 7pm sunset 06:30 18:59 12:28
23 Sep Equinox, 09:51 UTC (04:51 CDT) 06:39 18:47 12:08
26 Sep 12-hour day 06:42 18:42 12:00
3 Oct 6:30pm sunset 06:49 18:29 11:39
13 Oct 7am sunrise 07:01 18:13 11:12
21 Oct 6pm sunset 07:10 18:00 10:50
3 Nov Latest sunrise of the year
Latest sunset until Mar 2nd
07:25 17:43 10:17
4 Nov Standard time returns
Earliest sunrise until Feb 29th
06:27 16:41 10:14
7 Nov 6:30am sunrise (again) 06:30 16:38 10:07
15 Nov 4:30pm sunset 06:40 16:30 9:49
2 Dec 7am sunrise 07:00 16:20 9:20
8 Dec Earliest sunset of the year 07:06 16:20 9:13
21 Dec Solstice, 00:08 (Dec 22) UTC (18:08 CST) 07:15 16:22 9:06

You can get sunrise information for your location at wx-now.com.

And another thing

I also forgot to mention, because it happened while my office DSL was down (cutting off my Web servers from the world), that this past Friday had the earliest sunset of the year in the Northern Hemisphere.

Ordinarilly at a juncture like this I would write a dissertation on why the earliest sunset precedes the latest sunrise by four weeks, or why neither coincides with the solstice, but I'll spare you for now. No, the sun is setting later now, but the sun is also rising later, until January 4th, sorry to say.

The de facto equinox

If you live in the Northern Hemisphere, today is the first day since March 17th with less day than night. Yes, Friday was the autumnal equinox, when the earth's axis was perpendicular to its orbital plane. But because the atmosphere refracts the sun's light about 0.85°, days are always just a little longer than nights on equinoxes.

You can get sunrise and sunset information for your location at Weather Now.