Our antiquated names for the days of the week are hopelessly irrelevant and should’ve been replaced sometime during the reign of Charlemagne.  It’s true that we still have a sun and a moon (or Mon) but we only think of the moon when making love en plein air and we only think of the sun when it’s too hot or has gone AWOL because it’s January.  We might vaguely remember Woden and Thor (garbled into Wed and Thur) from Norse mythology, but, have you ever given them a serious thought?  How did a good Roman like Saturn wander in among these horn-hatted Vikings?  Anyway, can you name a classical deity more obscure than Saturn?  As for “Tue” and “Fri,” I neither know nor care who they are.  Perhaps they used to be worshipped in the Seychelles Islands.