You are calling God a liar. He instituted the seven day week. There is no known celestial, solar or earthly event that dictates seven days to a week. In the beginning . . 6 days of creation and one day of rest. It started with God. God would not command man to observe a day that he could not figure out which day it is he's supposed to be observing. God commanded Sabbath worship. He gave us a calendar to show us what day it is. The world tells you to worship another day (or no day). It is your choice to obey God or not.
You are very anxious to thump your chest and proclaim your personal rightiousness over your fellows. I was asking how you can be so sure that our calendar is synchronized with Creation. You couldn'r possibly prove that "Saturday" is an even multiple of weeks from the original "Sabboth".