March 2021 Celestial Calendar

March 2021 Celestial Calendar

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    Dave Mitsky
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    March Celestial Calendar by Dave Mitsky

    All times, unless otherwise noted, are UT (subtract five hours and, when appropriate, one calendar day for EST and four hours for EDT as of March 14th)

    3/2 The Moon is at perigee, subtending 32′ 42″ from a distance of 365,423 kilometers (227,063 miles), at 5:18
    3/3 Mercury is at the descending node through the ecliptic plane at 17:00
    3/4 Asteroid 4 Vesta (magnitude +5.8) is at opposition in Leo at 18:00
    3/5 Mercury is 0.3 degrees north of Jupiter at 7:00; the Moon is 5.0 degrees north-northeast of the first-magnitude star Antares (Alpha Scorpii) at 17:00
    3/6 The Moon is at the descending node (longitude 255.4 degrees) at 1:00; Last Quarter Moon occurs at 1:30; Mercury is at greatest western elongation (27.3 degrees) at 11:00
    3/7 The Curtiss Cross, an X-shaped clair-obscure illumination effect located between the craters Parry and Gambart, is predicted to be visible at 11:44
    3/10 The Moon is 3.6 degrees southeast of Saturn at 1:00; the Moon is 3.9 degrees southeast of Jupiter at 18:00; the Moon, Mercury, and Jupiter lie within a circle with a diameter of 5.3 degrees at 22:00
    3/11 Neptune is in conjunction with the Sun (30.919 astronomical units from the Earth, latitude -1.1 degrees) at 0:00; the Moon is 3.5 degrees southeast of Mercury at 4:00; the Sun enters Pisces, at longitude 351.6 degrees on the ecliptic, at 23:00
    3/13 The Moon is 3.6 degrees southeast of Venus at 4:00; the Moon, Venus, and Neptune lie within a circle with a diameter of 3.9 degrees at 6:00; the Moon is 3.9 degrees southeast of Neptune at 7:00; New Moon (lunation 1215) occurs at 10:21
    3/14 Daylight Saving Time (DST) begins today; Mercury is at aphelion (0.4667 astronomical units from the Sun) at 2:00; Venus is 0.4 degrees southeast of Neptune at 5:00; Venus is at its southernmost latitude from the ecliptic plane (-3.4 degrees) at 8:00
    3/17 The Moon is 2.5 degrees southeast of Uranus at 5:00
    3/18 The Moon is at apogee, subtending 29′ 29″ from a distance of 405,253 kilometers (251,812 miles), at 5:03
    3/19 The Moon is 5.2 degrees southeast of the bright open cluster M45 (the Pleiades or Subaru) in Taurus at 2:00; the Moon is 1.9 degrees southeast of Mars at 20:00; the Moon is 5.1 degrees north of the first-magnitude star Aldebaran (Alpha Tauri) at 20:00
    3/20 The Moon is at the ascending node (longitude 73.6 degrees) at 4:00; the northern hemisphere vernal equinox occurs at 9:37; the longitude of the sun is 0.0 degrees at 9:37; the Lunar X (the Purbach or Werner Cross), an X-shaped illumination effect involving various rims and ridges between the craters La Caille, Blanchinus, and Purbach, is predicted to be visible at 22:09
    3/21 Mars is 6.9 degrees north of Aldebaran at 8:00; First Quarter Moon occurs at 14:40; the Moon is 0.7 degrees north of the bright open cluster M35 in Gemini at 17:00
    3/23 The Moon is 7.0 degrees south of the first-magnitude star Castor (Alpha Geminorum) at 6:00; the Moon is 3.4 degrees south of the first-magnitude star Pollux (Beta Geminorum) at 11:00
    3/24 The Moon is 2.8 degrees north-northeast of the bright open cluster M44 (the Beehive Cluster or Praesepe) in Cancer at 12:00
    3/26 The Moon is 4.5 degrees north-northeast of the first-magnitude star Regulus (Alpha Leonis) at 4:00; Venus is in superior conjunction with the Sun (1.723 astronomical units from the Earth, latitude -3.2 degrees) at 6:00
    3/28 Full Moon (known as the Crow, Lenten, and Sap Moon) occurs at 18:48
    3/29 Venus is at its brightest (magnitude -3.9) at 2:00; the Moon is 5.9 degrees north-northeast of the first-magnitude star Spica (Alpha Virginis) at 21:00
    3/30 Mercury is 1.3 degrees southeast of Neptune at 4:00; the Moon is at perigee, subtending 33′ 10″ from a distance of 360,312 kilometers (223,886 miles), at 6:00

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