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Falcon 9 Landed on December 21, 2015. A 37th Flight Is Not a Live Counter.
SpaceX's mission page dates the first orbital-class landing to December 21, 2015, the first droneship landing to April 8, 2016, and the first reflight to March 30, 2017. Spaceflight Now's August 25, 2026 account of a 37th flight is that outlet's count on that day.