In case you want to synchronize your calendars, the equinox is Thursday at 22:23 Universal Time. That’s the fall equinox in the northern hemisphere; spring in the southern.
Subtract 4 hours for Eastern Daylight Time, 5 for Central, 6 for Mountain and 7 for Pacific.
Or, in other words, fall begins at 4:23 PM Mountain Daylight Time on Thursday, September 22.
Always the greatest day of the year!
He means September 22, not the equinox.