Mainstream American blindly believes that the Sabbath is Sunday but I snicker when I see how they keep it.

They attend a Sunday morning service (maybe) then rush to the nearest restaurant to have something to eat. That causes the people working to work on the Sabbath if Sunday was indeed the Sabbath. Then they go home, mow their yards and do other tasks around the house.

I know very few "Christians" who even attempt to keep the Sabbath. I happen to attend a small church (small because people don't want to obey the commandments) where they truly try to keep the Sabbath holy.

Sabbath begins Friday night with a service in the sanctuary.