I didn’t know this until just now, but Groundhog Day is almost certainly a stolen film; the plot first surfaced in a 1973 short story called 12:01 PM, wherein the loop is only an hour long, and the only one aware of it is a sad-sack businessman.

The story was then made into a 1990 Academy-Award winning short film far, far more disturbing than the Bill Murray classic. A subsequent TV movie expanded the idea to a full day.

The author and 1990 director brought suit, apparently, but were unable to compete legally with the essentially limitless resources of Columbia Pictures.

The good news is that the 1990 film is available on Youtube, split into 3 parts (total running time is 25 minutes). The protagonist is played by an actor you will find familiar.