How Many Days Until Fall 2021? October 16, 2020August 15, 2017 by Chris Robbins Fall 2021 Begins: Wednesday, September 22 at 3:21 pm EDT Duration of Fall 2021: 89 days, 20 hours, 38 minutes Similar Posts: How Many Days Until Spring 2022? Days Until Winter 2021 Countdown How Many Days Until Summer 2022?