Summer Solstice 2024 Time Pdt. Usually it's a decent rule of thumb that seasons start on the 21st of the appropriate month, but that's not always the case—and this. It also lists astronomical sunrise and sunset timings on summer solstice day.
The first day of summer arrives with the solstice this year on thursday, june 20, 2024 at 4:51 p.m. The solstice is the time of year when the sun’s rays hit the earth at the steepest angle.