Summer Solstice 2025 Date And Time In The Us. A solstice isn’t a whole day. The first day of summer, also known as the summer solstice, will occur on saturday, june 21, 2025, at 10:42 pm edt.

In different time zones, the date of the solstice can differ by a day, so it is important to indicate your exact location. In different time zones, the date of the solstice can differ by a day, so it is important to indicate your exact location.