In 2005, summer begins June 21, 2:46 A.M. EDT (06:46 UT) - Woo-Hoo!
Solstice comes from the Latin (sol, sun; sistit, stands). For several days before and after each solstice, the sun appears to stand still in the sky—that is, its noontime elevation does not seem to change.
In the Northern Hemisphere the longest day and shortest night of the year occur on this date, marking the beginning of summer.
http://www.infopleas...t/solstice.html