Was, is and always will be Saturday. Regardless of what anyone else says. I go to church on Saturday because the church is true to the Holy Word. How has it come that many of our christian churches proclaim Sunday as the day of Sabbath? It is false and does not match with what the bible says. We have one man to thank for the changing of the Sabbath from Saturday to Sunday, and he had no God given right to. In the early parts of the fourth century Constantine issued a decree, declaring Sunday a festival all over the Roman Empire. ever since, this has stuck in the minds of millions as the day we should worship on. Saturday is the true day because that is the day God finished his work on creating the universe, which was Saturday, the seventh day.