When Is Summer Solstice? The Longest Day of the Year and What It Means

The June 2026 solstice will occur on Sunday, June 21 at 4:24 a.m. EDT.

It marks the start of astronomical summer in the Northern Hemisphere and astronomical winter in the Southern Hemisphere.

Stonehenge in Wiltshire will host sunrise gatherings, with English Heritage also offering a livestream.

The event highlights Earth’s axial tilt, which drives the seasonal shift and the year’s longest day in the North.