I thought about this a long time, prayed about it, asked God about it and read the Bible about it (both old and new testaments). Here's the insight I received from God. God is infinite, existing outside space and time.  His view of time is different from man's.    Man is finite.  Man labelled the days that God created. As I understand it, the important part is the day of rest reserved to recognize and rejuvenate through worship of God.  This was/is in recognition of God after all his creation work, that He rested when He pronounced it was good. I personally don't get hung up about which days I rest and recognize and praise God.  In fact, nowadays I find myself doing it daily. You were being provocative, weren't you? Just trying to satisfy the provocation.