For this reason Satan especially hates the fourth commandment and does all he can to get the whole world to disregard it. Further, the days of Creation, as recorded in Genesis 1, all began at even. They were also literal twenty-four hour days just like we have now. If we say they were not, but that they were long periods of time, maybe a thousand or more years long, we are limiting God's power. Time can be traced to the very second by the position of the stars.
Reliable sources testify no time has been lost.
Most, if not all dictionaries will tell you Sabbath is the seventh day of the week, and Sunday is the first day, as will also most calendars. Many gave up their lives. But by defeat they conquered and the gospel spread. Never giving up, Satan planned new strategies. His tactic to gain the victory this time was to join the church and bring in idolaters who only partially accepted Christianity.