>> I do think that the "days to maturity" for pumpkins and squash refers to planting from seed,
You might very easily be right.
Did I count wrong? ... I guess so!
I think I counted one month twice. Thank you!
Aug 6 to Oct 31 = about 12 weeks = 84 days.
DUHH! Or, in this case, I think "double-DUHH"!