Spring Equinox March 20-23
Summer Solstice June 20-23
Autumnal Equinox Sept.20-23
Winter Solstice Dec, 20-23

Candlemas (also called Imbolc or St Bridget's Day) Feb. 2
Beltane May 1
Lammas Aug. 1
Samhain Oct. 31
For more in depth http://www.equinox-and-solstice.com
or just Google "equinox/solstice"

And on a musical note: try humming "Autumn in New York" and follow with "Moonlight in Vermont" <chuckle, chuckle>