What Is Summer Solstice 2024 Event. Make your own summer crown with fresh flowers and greens to wear during the event. It’s the longest day and shortest night in the northern hemisphere.

But what if summer solstice 2024 isn’t just an ordinary day of the calendar year? On june 22, 2024, the smithsonian marks the first saturday of summer—solstice saturday—by staying open late and hosting programs and performances throughout the day and night.