October 3rd, 2011 (-13.09% difficulty adjustment)
There's not too much that we can glean from the price action here since the economics of Bitcoin at that point were entirely different in 2011 than they are now.
There were no large mining firms present, VC Firms, institutional investment, etc.
Hell, Barry Silbert hadn't even touched down yet.
Tether didn't even exist at this point in time. Mt. Gox hadn't imploded yet.
Satoshi was still communicating with people.
