This was an interesting request.
Needing to get the date of 3rd Wednesday for a given month, automatically, using pure Excel functions.
So, sharing here on what is the formula and how to get there.
=DATE(YEAR(F14),MONTH(F14),1) + CHOOSE(WEEKDAY(DATE(YEAR(F14),MONTH(F14),1), 13), 7,6,5,4,3,2,1) + 14
