Summer officially begins in the Northern Hemisphere on June 20 with the summer solstice, the day with the greatest amount of possible daylight and the shortest night.

Meet the DJs spinning Earth Day into nightlife At Earth "Night" celebrations, you can dance, vibe, and get involved with local climate action.

Friday is the longest day of the year north of the equator, where the solstice marks the start of astronomical summer.

Discover all about the Longest Day of the Year 2025 on June 21, the Summer Solstice. Learn why it’s the lengthiest day and ...

The summer solstice marks the beginning of astronomical summer each year, typically falling between June 20 and June 22. In meteorology, the official start of the summer season is June 1, marking the ...