The autumnal equinox arrives Monday, marking the start of the fall season for the Northern Hemisphere and the spring in the ...

For those in the Northern Hemisphere, sunlight will now gradually diminish each day until the winter solstice on December 21, ...

Day and night will get equal time for a brief moment Monday as much of the world heads into fall. The autumnal equinox ...

Northern Hemisphere’s fall or autumnal equinox can land between September 21 and 24, depending on the year. Its spring or vernal equinox can land between March 19 and 21.