Summer Solstice 2024 Date And Time Usa. Is it really the longest day of the year? In different time zones, the date of the solstice can differ by a day, so it is important to indicate your exact location.

It also lists astronomical sunrise and sunset timings on summer solstice day. The first day of summer is also known as the summer solstice, and in 2024 it happens on thursday, june 20 at 4:51 p.m.