2024 Spring Equinox Date Time And Date. 22, will depend on where you live: W hile meteorologists like to call fall at the beginning of september, astronomical autumn starts later, on the autumnal equinox.this year, it falls on sunday, sept.

In 2024, the spring equinox, also known as the first day of spring, will occur on wednesday, march 20, at precisely 3:07 utc (coordinated universal time). Arizona time on tuesday, march 19.