The first day of spring is marked by the spring equinox, also known as the vernal equinox.

The first official day of spring is coming soon, marking the 2026 spring equinox in Illinois. Here's the local forecast for the season.

Friday marks the astronomical beginning of the spring season. Here's what weather to expect across Tennessee.

The spring equinox, also called the vernal equinox, marks the official start of spring in the northern hemisphere. It occurs when the sun shines directly on the equator, resulting in nearly equal ...

These graphics explain why Easter Sunday changes each year based on ancient interpretations of the solar and lunar cycles.

The spring equinox, also called the vernal equinox, marks the official start of spring in the northern hemisphere. It occurs when the sun shines directly on the equator, resulting in nearly equal ...