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USPS Star Calendar for 20 to 26 March 13 March 2011

Posted by amedalen in March 2011.
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20 Mar    Tonight, the moon and Spica rise side by side only 1½ finger-widths apart. Traveling together across the night sky, they are low in the southwest at daybreak. Saturn is 1 fist-width to their upper right. The vernal equinox occurs at 2321 UT as the sun crosses the celestial equator into the northern celestial hemisphere, marking the first day of spring.

21 Mar    The moon rises 2 hours after Saturn, which is more than 2 fist-widths away. Spica lies between them.

23 Mar    The moon is to the right of the constellation Scorpius low in the south before dawn. Mercury reaches its greatest elongation, 18.6 degrees east of the sun, and sets 2½ hours after the sun.

24 Mar    Antares, the red heart of Scorpius, is 1 finger-width below the waning gibbous moon this morning. About three-fourths of the moon’s surface is illuminated.

26 Mar    The moon is above the dome of the Teapot constellation, Sagittarius, and magnitude 2.9 Kaus Borealis is 1 finger-width below the moon. Last-quarter moon at 1207 UT


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