The point on the ecliptic where the sun is at its southernmost point for the year, resulting in the shortest day of the year in the Northern Hemisphere.

The point on the ecliptic where the sun reaches its maximum northern declination (approx. 23°27'), marking the position of the sun during the summer solstice in the Northern Hemisphere

The collective name for the four points marking the change of seasons: the vernal and autumnal equinoxes, and the summer and winter solstices.