Genesis 2:1-3 KJV
Thus the heavens and the earth were finished, and all the host of them. And on the seventh day God ended his work which he had made; and he rested on the seventh day from all his work which he had made. And God blessed the seventh day, and sanctified it: because that in it he had rested from all his work which God created and made.
It is just being treated as a holy day and thus man worships on that day. Simple. Why make a case for or against it. Is the next attack on Christmas day or the day of the death of Christ in April?
wy69