The two points on the Celestial Sphere which mark the Sun's position at the moment of time at which the Sun reaches its greatest northern or southern Declination. At such times, the Tropical Longitude of the Sun will be approximately CAN00?° or CAP00?°. In general, precise agreement can not be expected, as the Sun does not travel precisely along the Ecliptic, but has a small latitude. Nevertheless, the two points lying on the Ecliptic at CAN00?° and CAP00?° are usually taken as the Solstice Points.
Comments: Solstice Points