Chillier weather, shorter days, hot mugs of apple cider and Halloween decorations aren't the only signs the seasons are changing. It's officially the first day of fall, based on astronomical data.

The autumnal equinox arrives on 22 September, marking the end of summer and the beginning of autumn, heralding the arrival of chillier weather and the winter months. The autumnal equinox occurs in ...

The autumn equinox is now upon us! Today marks the moment that the sun crosses the celestial equator, ushering in the beginning of astronomical autumn in the northern hemisphere, which brings with it ...

While many people mourn summer with the passing of Labor Day Weekend, the autumnal equinox is the official end of the summer season. Besides sweater weather and pumpkin-spiced menu items, what does ...

Summer still has a tight grip on the Lone Star State through the weekend, so it may not feel like fall is right around the corner - but it is arriving Monday with the autumnal equinox. Before we start ...

Say goodbye to summer because the autumnal equinox arrived on September 22, marking the beginning of fall in the northern hemisphere. "Equinox is latin for 'equal night,'" according to AccuWeather.

Day and night will get equal time for a brief moment Monday as much of the world heads into fall. The autumnal equinox arrives Monday, marking the start of the fall season for the Northern Hemisphere ...

The Earth is tilted at a 23.5-degree angle, and as it travels around the sun, the Earth’s axis is tilted toward or away from the sun. During the equinox, the Earth’s axis and its orbit line up, ...

What is the autumnal equinox? The autumnal equinox marks the start of autumn in the Northern Hemisphere. The Earth travels around the sun at an angle, and for most of the year, the Earth’s axis is ...