Here's a thought:
No doubt it will take a LONG time to piece together ALL 1,578 episodes of the daytime edition. But we can, however, try to nail down the airdates for some of them, during the shopping era (1983 to 1984).
To start with, David Dickstein, who was a contestant on the 7/12/83 episode, said that on the next episode, his male opponent, Richard Heft, took home the $82,000 jackpot. Supposedly, the cash jackpot was introduced on the 5/30/83 episode, and that Richard Heft became the first contestant to win it. If that's true, then it would mean Mort Camens' big win could have been anywhere between 1/3/83 and 5/30/83.
And also supposedly, the 2nd contestant to take home the daytime shopping cash jackpot was Barbara Phillips (8/9/83 episode). Now exactly who was the next person after her to do so, I don't know.