Important Astrological Dates in March 2023 To recap, here are the major dates you'll want to keep an eye on this month, no matter your astrological sign: Thursday, March 2: Mercury enters Pisces Tuesday, March 7: Full moon in Virgo Tuesday, March 7: Saturn enters Pisces Thursday, March 16: Venus enters Taurus Saturday, March 18: Mercury enters Aries Monday, March 20: Aries season begins Tuesday, March 21: New moon in Aries Thursday, March 23: Pluto enters Aquarius Saturday, March 25: Mars enters Cancer ...