Dec
26
Sat
see http://cantonbecker.com/retrograde for details…
Dec
31
Thu
This is the only “Blue Moon” (2nd full moon in December) in 2009. Happy new year!
Mar
20
Sat
The date (near March 21 in the northern hemisphere) when night and day are nearly the same length and Sun crosses the celestial equator (i.e., declination 0) moving northward. In the southern hemisphere, the vernal equinox corresponds to the center of the Sun crossing the celestial equator moving southward and occurs on the date of the northern autumnal equinox. The vernal equinox marks the first day of the season of spring.
http://scienceworld.wolfram.com/astronomy/VernalEquinox.html
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