How To Celebrate Summer Solstice In 2025. Here's everything you need to know about the northern hemisphere's longest day of the year. The summer solstice arrives on june 20, 2025 in the northern hemisphere.

There are many ways to celebrate the first day of summer around the world — people gather near stonehenge, dance around a maypole,. Here’s everything you need to know about the northern hemisphere’s longest day of the year.