The Fall Equinox begins at 1:20pm
The Fall Equinox is also called the Autumnal Equinox. In the Northern Hemisphere, this is the 1st day of fall; in the Southern Hemisphere, it is the 1st day of spring The Equinox is the day when the sun crosses the equator which in theory makes 12 hours of daylight and 12 hours of night. What is cool about the day is that the sun should rise exactly in the east and set in exactly in the west.
The equinox happens at the exact moment across the planet. The time represented here reflects our Mountain Daylight Time.