Which day of the week is The Sabbath? The first or the seventh?
BTW I believe that every single one of these churches has a service on Saturday after the Sun goes down. Scripturally speaking that makes it Sunday, doesn't it? Or did scripture suddenly change when we started days at midnight rather than sundown?
I hate the modern American church.
So move to Europe. You'd just love the European churches. Plenty of room to spread your legs out.
In the Catholic Church, the Sabbath is Saturday. In our Liturgical Books, it is clearly called "Sabbato" in Latin - "Sabbath".
The obligations of the 4th Commandment, however, are transferred from the Sabbath, and the Jewish feasts ordained by God through Moses and by the High Priest (i.e. Hannukah), to the Lord's Day, and Christian feasts created by the Church by the Pope (i.e. Christmas, Ascension, All Saints, etc.).