THE AUTUMNAL EQUINOX

FALL BEGINS at 1:54 UT on September 23, which is 9:54 PM EDT on September 22. At this moment the Sun is centered over the celestial equator. The Sun’s rays graze the North and South poles, and everywhere in between experiences equal 12 periods of daylight and nighttime. This is thus the first day of fall for the northern hemisphere,… Continue reading