Not much of a wheel i know..
SAMHAIN: May Eve
YULE: june 21st
IMBOLIC: February Eve
SPRING: September 21
BELTANE: November Eve
MIDSUMMER: December 21
LUGHNASADH: February Eve
AUTUMN: March 21
Well that was for us southern hemisphere witches for the best eva supa dupa hell of the yr for the northern dudes check out The Wiccan Groves one at
http://www.geocities.com/Athens/Forum/3183/year.html