what day is considered the middle of summer
midsummer - June 21, when the sun is at its northernmost point. June 21, summer solstice. June - the month following May and preceding July. solstice - either of the two times of the year when the sun is at its greatest distance from the celestial equator. summer, summertime - the warmest season of the year; in the northern hemisphere it extends from the summer solstice to the autumnal equinox; they spent a lazy summer at the shore.