The Julian calendar uses ordinal days of the week from the Jews? The Roman Calendar reformed by Julius Caesar in 45 BC took their ordinal days of the week from the Jews?
I don't think so.
/johnny
The Julian calendar of 45 BC did not have ordinal days of the week. A “week” is strictly a Jewish concept. The Greeks didn’t even have a word for it, and thus transliterated Sabbath straight from the Hebrew to translate the bible into Greek. To this day, the Greek word is literally merely, “sevens” (Hebtomada), and in Latin, “seven days” (Septomana)
The concept of “week” entered Roman culture only with the spread of Judaism and Christianity. And yes, even while they still used the Julian calendar, those Romans who counted days of the week counted “Yom Rishon” (the first day) as Dies Solis (Sunday).