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The science and significance of the autumnal equinox ... The autumnal equinox is a sure sign of fall. ... At the autumnal equinox (Sept 22, 2009; 5:18 P.M. EDT), the Sun appears to cross the celestial equator, from north to south; this marks the beginning of autumn in the Northern Hemisphere.
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www.infoplease.com/spot/equinox1.html
www.infoplease.com/spot/equinox1.html
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Equinox - Wikipedia, the free encyclopedia
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An equinox occurs twice a year, when the tilt of the Earth's axis is inclined neither away from nor towards the Sun, the Sun being vertically above a point on the Equator. The term equinox can als...
en.wikipedia.org/wiki/Equinox
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The Autumnal Equinox signals the end of the summer months and the beginning of winter. At this time of year, days have been shortening since the Summer Solstice some three months earlier, and the Equinox is the point where nights reach the same length as days.
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www.glyphweb.com/esky/concepts/autumnalequinox.html
www.glyphweb.com/esky/concepts/autumnalequinox.html
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Autumnal Equinox Day ... The Autumn equinox signals the beginning of Fall. It is the point where there is exactly 12 hours of daylight and 12 hours of darkness at the equator. If you live anywhere else, however, you will see a little bit more or a little bit less than 12 hours of daylight.
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www.holidayinsights.com/other/fall.htm
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Explanation: Today is the autumnal equinox -- should eggs be able to stand on end? This long-standing myth loses much of its mystique after a demonstration that eggs can be made to stand on end during any day of the year.
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antwrp.gsfc.nasa.gov/apod/ap030923.html
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Join us for an astronomical exploration of the Autumnal Equinox written by Von Del Chamberlain and presented by the Clark Foundation. ... Note: The 2006 autumnal equinox will occur at 10:04 p.m. MDT, 22 September 2006, when autumn begins in the Northern Hemisphere.
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www.clarkfoundation.org/astro-utah/vondel/equinoxaut.ht...
www.clarkfoundation.org/astro-utah/vondel/equinoxaut.html
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It's interesting to note that the ancient people considered that this time — the Autumnal Equinox — of equal day and night, to be more a time of repose, relaxation and realignment, as the nights are longer than the days from the Equinox in late September (around the 21st) until the Spring Equinox (Vernal Equinox) on...
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www.innerself.com/Astrology/Autumnal_Equinox.htm
www.innerself.com/Astrology/Autumnal_Equinox.htm
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The Sun in the sky during the Spring and Fall Equinox in the Northern hemisphere. ... On the Spring Equinox the Sun rises exactly in the east travels through the sky for 12 hours and sets exactly in the west. On the Equinox this is the motion of the Sun through the sky for everyone on earth. Every place on earth experiences...
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solar.physics.montana.edu/YPOP/Classroom/Lessons/Sundia...
solar.physics.montana.edu/YPOP/Classroom/Lessons/Sundials/equinox.html
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