The date of the summer solstice can fall at any point between June 20 and June 22, depending on the year. Why is the summer solstice the longest day of the year? During the summer

California starts losing daylight after the summer solstice — a full four seconds of sunlight by Sunday, June 22, according to Time and Date. By the end of June, the state will have lost an additional two minutes and 40 seconds since the solstice. By July 31, the days will be 42 minutes and 11 seconds shorter.