Spring Equinox
- the Sun rises due east today, but will rise slightly north of due east tomorrow
Summer Solstice
- longest day (most daylight) of the year
- the noontime Sun reaches its highest point of the year
Fall Equinox
- The sun has declination 0 degree today, but will have a negative declination tomorrow
Winter Solstice
- the noontime Sun cast the longest shadows
- the Sun crosses the meridian 23.5 degrees lower in altitude than the celestial equator
- sunset occurs at its farthest point south of due west for the year
