In Astraea, the Star-month we look upward and in Herthe, the Hearth-month we look inward. Nativity is the Northern Gate of the Cosmos through which the Divine descends to earth. This is reflected in the Star Fairy coming vertically down the chimney into the heart(h) of the house, and of course by the birth of God the Daughter into the world of manifestation.
During the month of Astraea, the Divine is a star in the heaven-world, about to descend. During the month of Herthe She is born in our hearts and present in the heart(h) of our sacred households where She is born on the last Star-day.
Interestingly also is that the Feast of the Conception of the Daughter (Astraea 11th) is exactly a month from the Feast of the Epiphany, or showing-forth of the Divine Child (Herthe 11th/12th).
Especially fascinating in this context is that this is true only in terms of the Filianic calendar, even though Christians celebrate the Feast of the Immaculate Conception (of Mary, not of Jesus) on the same day (December 8th/Astraea 11th).