The first day of summer is marked by the summer solstice, or the longest day of the year. Here's what to know about summer 2025.

Meanwhile, at the winter solstice, the Northern Hemisphere is leaning away from the sun — leading to the shortest day and longest night of the year.

This solstice falls between June 20 and 22. Meanwhile, at the winter solstice, the Northern Hemisphere is leaning away from the sun — leading to the shortest day and longest night of the year.

For those north of the equator, the summer solstice marks the longest day and the shortest night of the year.

On the summer solstice, you’ll cast the shortest shadow of the year due to the sun’s tilt. When summer starts in the Northern Hemisphere, it’s the beginning of winter in the Southern Hemisphere.

This solstice falls between June 20 and 22. Meanwhile, at the winter solstice, the Northern Hemisphere is leaning away from the sun — leading to the shortest day and longest night of the year.

The mirror image of the winter solstice, the summer solstice is historically linked to fertility - both the plant and human variety - in destinations worldwide.

The summer solstice happens when the sun reaches its highest point in the sky and marks the longest day of the year. The winter solstice is when the sun hits its lowest point, resulting in the ...