The summer solstice marks the official start of summer. It brings the longest day and shortest night of the year for the 88 percent of Earth's people who live in the Northern Hemisphere.

with the arrival of the summer solstice. So what is a solstice, exactly? It's the result of Earth's north-south axis being tilted 23.4 degrees toward the sun. This tilt causes different amounts of ...

Spring officially begins in the Northern Hemisphere on March 20 with the vernal equinox as the entire world experiences an ...

Ready for the first day of spring? What we know about the 2025 spring equinox, the autumnal equinox, summer and winter ...