First Day Of Summer 2025 Date. The following table shows the dates together with the exact time in which each of the seasons of the year begin. Need to know the exact date of of the first day of summer this year?

While not everything will change down here on earth immediately…it’s a year that marks a shift into an entirely new environment, setting the stage for many years to come. The first day of summer, also known as the summer solstice, will occur on saturday, june 21, 2025, at 10:42 pm edt.