Automatic timestamp when a cell is filled out

Question

I have an excel formula that is very simple and it works because I can restrict the recursive iterations. I am not very script savvy, but this is what it is and it works.

Answer 1

I set the timestamp to include HH:MM:SS but upon testing the stamp 4 times in under a minute I get: 03,14,11,07 fluctuate as the MM in my timestamp.