Cusp-a point of transition, as from one historical period to the next; the borders between the twelve astrological signs. You are considered to be "on the cusp" if you were born within a day or two of the beginning or end of any sign.
The Rocky Mountains, Lander's Peak, 1863; Albert Bierstadt
08 December 2010
Solemnity of the Immaculate Conception of the Blessed Virgin Mary