Summer Solstice 20254 2025 Time. The summer solstice represents the longest day, and the winter solstice the shortest. In 2025, the summer solstice in the northern hemisphere will occur on june 20, 2025, at 10:42 pm edt (or 2:42 am utc on june 21).
Winter begins with the winter solstice, thursday, december 21, 2034, 2:34 p.m. The summer solstice occurs in the northern hemisphere.