Every year around June 20 or 21, the Northern Hemisphere experiences the summer solstice—the longest day and shortest night of the year. The word “solstice” comes from the Latin solstitium, meaning “sun stands still,” because the sun’s path appears to pause before reversing direction.

The cause? Earth tilts on its axis at about 23.5 degrees. During the solstice, the North Pole leans closest to the sun, bathing parts of the Arctic in nearly 24 hours of daylight. In northern Norway, the sun doesn’t set at all—it simply circles the sky in a phenomenon known as the Midnight Sun.

At noon on the solstice, the sun reaches its highest point in the sky, casting the shortest shadow you'll have all year. It’s a moment when the sun seems almost directly overhead—especially the closer you are to the Tropic of Cancer.

Many cultures have long honored this light-filled day. At Stonehenge, the rising sun aligns precisely with the ancient stones. And in Sweden, it’s one of the biggest holidays of the year: people celebrate with flower crowns, maypole dances, songs, and long outdoor feasts.

A simple tilt in Earth’s axis creates seasons, shifts shadows, and inspires traditions that have lasted for thousands of years.