http://abcnews.go.com/Technology/summer-solstice-myths-suns-ascension/story?id=13886431
The 5th myth is that the Summer (Winter) Solstice is the first day of Summer (Winter).
It's called MidSummer (Winter) Day for a reason: it's the middle of summer (winter).
Just as the hottest (coldest) part of the day falls after noon (midnight), the hottest (coldest) part of the year falls after the midpoint of summer (winter).
The myth that summer (winter) starts on the midpoint is the one I'd like to see widely addressed.