First Day Of Summer 20254 2025 To Present. Here’s a list of the exact dates and times of the four seasons in north america, including the first days of winter, spring, summer, and fall for the next ten years. In 2025, the summer solstice will occur on june 21, at 02:42 gmt in the northern hemisphere, and on december 21, 2024 at 09:20 gmt in the southern hemisphere.

This event marks the beginning of summer in. The first day of summer, also known as the summer solstice, will occur on saturday, june 21, 2025, at 10:42 pm edt.