– “Equinox comes on September 22”
“The September equinox arrives on September 22, 2017 at 20:02 UTC. Although the equinox happens at the same moment worldwide, your clock times will depend on your time zone. For time zones in the continental U.S., this equinox comes at …1:02 p.m. PDT. ,” by Deborah Byrd in Astronomy Essentials.