Summer Solstice Date 2025. Is it really the longest day of the year? In 2025, the sky will be illuminated by 12 full moons, plenty of meteor showers, four eclipses and three supermoons.

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). This event marks the beginning of summer in.