This Wednesday we will celebrate the autumnal equinox and the beginning of astronomical fall. It happens this year at 3:21 pm EDT. So if fall is your favorite season, get out and enjoy the cooler weather at the end of the week as fall comes in with a cold front moving through the area. Won’t be long until the leaves start changing color! EarthSky has a great blog post giving details about what the equinox is at https://earthsky.org/astronomy-essentials/everything-you-need-to-know-september-equinox/.