It is considered factual by those that are supposed to know such things that the rotation of the Earth has been solwing down as a result of the Moon's drag on us.

I once used their estimate of the ffect in an effort to reverse project the data to see if I could arrive at a reasonable date when we first acquired the moon. not productive. No data on what our rotation velocity was originally, no data on our probable orbit then and no assurance the degratation was uniform. Still fun to try.
jjw