This one i just had to answer now to show how deluded you are to see things what are not there.
Have you ever noticed in the Genesis account of the seven day creation that on the seventh day, it doesn't say "And the evening and the morning were the seventh day", like it said for all of the other six days? Couldn't that be something significant, signifying perhaps an eternal rest instead of it being about a day?
The seventh day was the end of the week, if it was evening and morning again it would be the first day again :sunday ,since saturday or back then called sabbath day, saturn is from the romans
You would better ask your self the question did adam and eve celebrate gods holy day? i do not see why not , for who did he make it holy ? for him self ?