If you change your guess then you throw in an additional $5.
I'll go with noon February 17, 2022. Fixed...wrong year.
That's 2 guesses, $10 to you, Rastus! Hey, your rules.
Speaking of rules, is the winner closest to the date +/-, or closest without being past the actual date?
Hard for me to guess. Either it's within 6 months of inauguration before he's 25th amendment out - or worse. Or it will be ca. 3 years.
I'll start with the 6 month theory - July 18, 2021. If he's still there, I'll go another $5 and do the 3 year guess.