@roaddog73 I don't think "Saturday night" is a reference to the Jewish Sabbath.
"Celebrate Sunday on Saturday night..." surely refers to a lapsed Christian, probably Catholic, who prefers going out drinking and partying on a Saturday to attending church on a Sunday morning (when he's presumably sleeping off the previous night's excesses).
@roaddog73 I don't think "Saturday night" is a reference to the Jewish Sabbath.
"Celebrate Sunday on Saturday night..." surely refers to a lapsed Christian, probably Catholic, who prefers going out drinking and partying on a Saturday to attending church on a Sunday morning (when he's presumably sleeping off the previous night's excesses).