Regino, Abbot of prum wrote kind of a ruff copy of the 5 commandments of the church but more than 5, stating the main ideas and things that should be done. From century to century people would cut it down to the main and important five. First the German translated it and it was long then it was cut down. In 1586 it was cut down to four but now it is five.
The main five are now is: you shall attend mass on Sunday and holy obligations,you shall confess your sins at least once a year, you shall receive the Eucharist at least once during Easter season,you shall observe the days of fasting, you shall help provide for the needs of the church.
January 1: The Feast of Mary, the Mother of God. August 15: Assumption of Mary into heaven. Ascension Thursday. December 8: The Feast of the Immaculate Conception. November 1: All Saints Day.December 25: Christmas, the birth of Jesus, are all Holy obligations that sometimes don’t fall on Sunday.