July 8th +/- a week
November 8th +/- a week
The time path of this process is March to July [gradual climb] -> July to November steep, saw tooth climb, tipping point – November – January freefall. So to get to the tipping point took 8 months to reach and yet takes just 3 months to bottom.
edit: 11/4 Peoplenomics have updated the window for the tipping point to November 14th