Robert A. Tanaka

When Is Summer 2025 Usa. The first day of summer is also known as the summer solstice, and in 2025 it happens on thursday, june 20 at 4:51 p.m. United states 2025 holiday calendar with all major holidays and observances.

The true solstice will arrive in the northern hemisphere at exactly 4:51 p.m. In 2025, the summer solstice will occur on june 20, at 20:51 gmt in the northern hemisphere, and on december 21, at 09:20 gmt in the southern hemisphere.