FRIDAY (A.S. frige-dæg, fr. frige, gen. of frigu, love, or the goddess of love - the Norse Frigg, - the dæg, day; cf. Icelandic frjádagr, O.H. Ger. friatag, frigatag, mod. Ger. Freitag), the sixth day of the week, corresponding to the Roman Dies Veneris, the French Vendredi and Italian Venerdi. The ill-luck associated with the day undoubtedly arose from its connexion with the Crucifixion; for the ancient Scandinavian peoples regarded it as the luckiest day of the week. By the Western and Eastern Churches the Fridays throughout the year, except when Christmas falls on that day, have ever been observed as days of fast in memory of the Passion. The special day on which the Passion of Christ is annually commemorated is known as Good Friday (q.v.). According to Mahommedan tradition, Friday, which is the Moslem Sabbath, was the day on which Adam was created, entered Paradise and was expelled, and it was the day of his repentance, the day of his death, and will be the Day of Resurrection.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)