Edit 13June2018: also check out our 3D print projects on risley.net.
We define summer three ways. There’s the celestial season: from the summer solstice on June 21st to the autumnal equinox on September 22nd. There’s the traditional vacation season, from Memorial Day on May 27th through Labor Day on September 2nd. Last, there’s summer vacation from school which, for us, ran all too quickly from June 6th through August 14th.