Everyday of a christain is meant to be a holy day why? God that we serve is a Holy God, His eyes can not behold sin and also our bodies is the temple so being the temple of God is meant to kept holy atvall times.
According to bro Eli he said Catholic believed that some days are meant to be holiday in that they mere and do anything they want to do but that is not what is written in the bible.
Also He said that according to the bible that Jesus died on Wednesday afternoon and resurrected on Sunday morning that Jesus was not buried on Friday if He was he will not fulfill what was written in Matthew12 vs 38-40.
All th days of our life is attributed to be holy as seen in the book of Luke 9 vs 23 where Jesus was admonishing them that following Him was a daily activity, in that it involves reading the bible daily, acting in accordance with God's word daily, there should not be any exceptions for any day for that.
In summary , we ought to present our days holy four God is holy and when we do so we can draw others to God.
God bless His word.