“For anyone who wants to check all of this, I really don’t suggest watching Groundhog Day in this manner. It’s not the best way to enjoy what is essentially a light-hearted comedy whose metaphysical concerns are supposed to be enjoyed in fun, and not worked out mathematically. Normal people should be happy to just watch, and accept that Phil Connors is stuck repeating his one day endlessly over and over until he finds himself- but then, I don’t think I’m normal.”
Simon Gallagher has made a compelling argument to estimate how many days Bill Murray was trapped in the 1993 comedy Groundhog Day.