September 23, 2011, Lakewood, CO
09:42:06, hours MDT
...continued hiker’s meditation…
First day of fall, hoar frost on the weeds and grasses.
September 20, 2011
http://www.timeanddate.com/calendar/september-equinox.html accessed on web today by author.
September 22, 2011, 03:04 AM MDT
Explained
The September Equinox
The September equinox occurs at 09:04 (or 9:04am) Coordinated Universal Time (UTC) on September 23, 2011. It is also referred to as the autumnal or fall equinox in the northern hemisphere, as well as the spring or vernal equinox in the southern hemisphere (not to be confused with the March equinox). This is due to the seasonal contrasts between both hemispheres throughout the year.
What happens during the September equinox?
The sun crosses the celestial equator and moves southward in the northern hemisphere during the September equinox. The location on the earth where the sun is directly overhead at solar noon is known as the subsolar point. The subsolar point occurs on the equator during the September equinox and March equinox. At that time, the earth’s axis of rotation is perpendicular to the line connecting the centers of the earth and the sun.
One year during the backpacking journey the hoar frost came much earlier. It was on the Hoback River in NW Wyoming about September 6th that year. Gosh, I miss sleeping outside during the autumnal change in seasons.
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