Summer solstice is the longest day of the year. Here's why it can occur on June 20, June 21 or June 22. Plus: Solstice 2025 ...

The summer solstice is when the sun reaches its highest point in the sky for the year, and marks the beginning of summer. It is the longest day of the year, with the most daylight. "The summer ...

With the vernal equinox nearly upon us, here's what we know about when spring starts, the shortest and longest days of the year and more: When is the first day of spring 2025? The first day of ...