September's (sporadic) sweater weather chill and the changing leaf colors are a sign that the first day of fall is near. Here's what to know about the autumnal equinox and fall foliage forecast map ...

When does the equinox occur? According to NASA, the equinox occurs twice a year, once in March and once in September, when the day and night are of equal length. Northern U.S: Leaves often start ...

The first day of fall is here, which means the autumn equinox is near. Here is what you need to know when it occurs. The equinox falls on Monday, Sept. 22, at 1:19 p.m. CT According to NASA, the ...