The Sabbath is on the seventh day of the week, which is Saturday. It starts on the eve of Saturday [or Friday evening] and ends on the eve of Sunday.\n\nSunday became the state-sanctioned church's "official" day of worship of the then new church, the Roman Catholic Church, when Emperor Constantine declared it to be so. He was the high priest of Sol Invictus, a pagan religion that worshipped the sun on Sunday! \n\nAnd people continue to follow that same decree for over 1,700 years now without even knowing why... Get it?