Since today is Saturday I made some searches where the word Saturday came from and here is the trivia that I found.
Saturday, seventh day of the week, named in honor of the Roman god Saturn. In Latin, Saturday was called dies Saturni; it was called Sater-daeg by the Anglo-Saxons. It is the holy day of the Israelites of the and in Hebrew is called Sabbath, the only day of the week with a name, the rest being numbered. The word sabbath derives from the Hebrew word meaning, “to rest or cease”; the Jews were enjoined from working on the seventh day. It begins at sunset Friday and lasts until sunset Saturday. In the early days of Christianity, the holy day gradually shifted to Sunday, which, as the first day, was deemed more appropriate since it was the day of the resurrection of Jesus Christ and the day on which creation began. In Sweden, however, Saturday is Lördag, or ; and in Denmark and Norway, it is Lørdag. In Spanish, it is el sábado and in Italian sabato, both derived from sabbath. Several Christian sects, notably the Seventh-Day Adventist church, have reverted to Old Testament practice and observe Saturday as their day of worship.