From Stone Age astronomy to Viking law and Roman goddesses, cultures across time have honored the longest day of the year

The 2025 summer solstice falls on Friday, June 20, at 10:42 p.m. ET, according to NASA and the Old Farmer's Almanac. This marks the longest day of the year in the northern hemisphere, when the Earth's tilt positions it closest to the Sun.

As the sun rose on the longest day of the year in the Northern Hemisphere, a crowd erupted in cheers at Stonehenge where the ancient monument in southern England has clocked the summer solstice over thousands of years.