Dorey Bernelle

Summer Solstice 2025 Time Zone. The first day of summer (june solstice) is when the sun is in its most northern position directly over the tropic. 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).

Summer solstice 2025 (beginning of astronomical summer) on the day of the summer (june) solstice, the solar disk, moving along the ecliptic, will fall into its northernmost point and will be. At the summer solstice, we have the longest day and the shortest night of the year.