Saturn's Day certainly is indeed the 7th day of the week on the Roman calendar. It goes like this:
First day is Sun's Day, with no other god coming before it like in The Ten Commandments. Thank Constantine for that.
Second day is Moon's Day, Sun's opposite; in the Levant, during the Mithraic Wars in which Rome was victorious, Moon went by the name of Sin, and to Sin was to countermand the Sun.
Third day is Tiew's Day, and Tiew was a lesser Teutonic god that was on the calendar established for Roman Britain's use. It's Mars' Day in Europe.
Fourth day is Woden's Day, and Woden is a greater Teutonic god, used on the calendar for Roman Britain's use. In Europe, it's Mercury's Day.
Fifth day is Thor's Day, and if you're a comic here buff you already know who Thor is. But he, too, is Teutonic for the calendar intended for Roman Britain's use. In Europe, it's Juno's Day.
Sixth day is Fria's Day, a lesser Teutonic god and you got it--on the calendar intended for use in Roman Britain. In Europe, it's Venus' Day.
Seventh day is Saturn's Day, so yes--Saturday is the seventh day. Count 'em--1, 2, 3, 4, 5, 6, 7.
So how does the sabbath get moved from the seventh day to the first day? That contradicts the whole metaphor of G-d resting.
It didn't get moved. Sabbath is on Saturday. And here's a reminder that Jews who celebrate Sabbath on the first day of the Roman week are considered "Christianized", especially since the Roman calendar is a solar calendar and the traditional Jewish calendar is lunar.
clara, why did you jump in and get started on this? You apparently didn't bother to read what mike wrote in the first place to provoke my question:
Thus certain passages can be interpreted slightly differently. An example is the Sabbath. Seventh-Day Adventists interpret that to mean Saturday, and they're quite emphatic and insistent about it. I don't happen to subscribe to that, but I still accept Adventists as my brothers and sisters in the faith. So much for differences, Clara.