Precession of the Equinoxes, page 5
So far we've looked at the solstices only briefly but now we should bring them into the picture. We have seen that, as a result of precession, the equinoxes shift along the constellations of the zodiac. Naturally, the same thing happens to the solstices. Putting these together we can construct a simple diagrammatic calculator to determine which constellation carries the sun on any solstice/equinox in any age. Remember that an astronomical age is assigned the name of the constellation that carries the sun into the dawn sky on the spring equinox. Figure 9 below shows the solstice and equinox markers at the beginning of our current age, that of Pisces.
Hotlink to instructions to make your own precession calculator.