09/22/2010 -
Today is the day when Northern summer changes to fall at 10:09 pm CDT.
At that precise moment, we can celebrate the Autumnal Equinox. The word
means "equal night," meaning equal day and night. Equinoxes are points
in time, while the term equiluxes are days. By definition, equiluxes are
the days where sunrise and sunset are closest to being exactly 12 hours
apart.
This Autumnal Equinox is a special equinox. For the first time in almost
20 years, northern autumn is beginning on the night of a full Moon. The
coincidence sets the stage for a "Super Harvest Moon". The Harvest Moon
gets its name from agriculture. In the days before electric lights,
farmers depended on bright moonlight to extend the workday beyond
sunset. This was the only way they could gather all their crops in time
to sell at the market. The full Moon closest to the autumnal equinox
became the Harvest Moon and usually, the Harvest Moon arrives a few days
to weeks before or after the beginning of fall. The last time this
awesome event occurred was Sept 23, 1991 and it won't happen again until
the year 2029.
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