It would have been very easy to just change the assessment close to the fact. But will look for it.
I also found Sep 21, 2001, the market continued its rapid decline after this date, bottom was Sept 2002.
Ed Yardeni Says It’s Up from Here
The veteran market sage’s key indicators tell him the market hit bottom on Sept. 21, and history says the next 12 months should see a surge
https://www.bloomberg.com/news/articles/2001-10-23/ed-yardeni-says-its-up-from-here
And he was awfully bullish at the end of 2021:
Some of Yardeni’s forecasts:
Forward earnings per share will be end up this year at $220 (up from $217 currently) and rise to $235 at the end of 2022 and $250 at the end of 2023
The S&P 500 is set to end 2021 at 4,800, 2022 at 5,200, and 2023 at 5,500
The forward P/E will remain high around its current level amid an earnings-driven rally
Ed Yardeni Says Earnings-Led Stock ‘Melt-Up’ Has Staying Power - Bloomberg
I guess a perma bull will always be correct until they are not, especially in the last decade.