It's almost time to fall into fall, though in many parts of the country, it feels like we're already there. There are ...

During an equinox, places around the globe experience nearly equal amounts of daytime and nighttime. The second occurrence ...

Autumn officially begins today! It’s apparent in the crisp dawn air and the rapidly shifting leaf colors. I saw my breath ...

The equinox has no relationship to Houston’s weather, and the city’s climate afterwards isn’t guaranteed to bring cooler or warmer temperatures.

Another 89 days later, the spring or vernal equinox will occur. Then it's another 93 days and 18 hours to the summer solstice — when the most direct rays of the sun reach their northernmost ...

and spring in the Southern. At that moment, the sun would be shining directly overhead as seen from a point in the equatorial Atlantic Ocean, 461 miles (743 km) south-southwest of Monrovia, Liberia.

The official start to the fall season, the autumnal equinox, occurs on Sunday, Sept. 22. What exactly happens during the ...

while the vernal equinox marks the start of spring. The apparent equal hours of daylight and darkness result from the refraction of sunlight, or the bending of light's rays, the National ...

Equinoxes occur twice a year, around March 21st (the vernal or spring equinox) and around September 23rd (the autumnal equinox). During these times, day and night are nearly equal in length due to ...

There are specific times when the astronomical seasons officially turn over -- for fall, it's the autumnal equinox. For spring, it's the vernal equinox. Fall equinox in the Northern Hemisphere ...