When Is Summer Solstice 2024. I n 2024, june 20 marks the summer solstice, the first official day of astronomical summer. According to the national weather service, the summer solstice will occur on thursday at 4:51 p.m.
The summer solstice, which is when the sun reaches the most northerly point in the sky, is set to occur tonight at 21:50 bst/22:50 cest. Edt (2051 gmt), and the summer solstice for the southern hemisphere occurs on dec.