July 25th, 2008
The Grainger Observatory at Phillips Exeter Academy in New Hampshire is a state of the art facility for astronomical research, and is open to the public on clear Friday evenings when school is in session.

July 22nd, 2008
Another contender for largest sundial in the western hemisphere—the sundial in Carefree, Arizona. It was built in 1959 in honor of K.T. Palmer, the founder of the town, and is 72 feet long and 35 feet high. More info here and here.

July 11th, 2008
? Full Sun on grid: Friday, July 11 ? 8:24 P.M.
? Half Sun on grid: Saturday, July 12 ? 8:25 P.M.
See below for more info.