"By an equally suspicious freak of temporal relastatics, it is nearly always Saturday afternoon just before the beach bars close. No adequate explanation for this has been forthcoming from the dominant life forms on Ursa Minor Beta, who spend most of their time attempting to achieve spiritual enlightenment by running round swimming pools, and inviting Investigation Officials from the Galactic Geo-Temporal Control Board to "have a nice diurnal anomaly.""
January 1, 1970
https://en.wikiquote.org/wiki/The_Hitchhiker's_Guide_to_the_Galaxy