OT nerd response . You may be right . The original is around 30 cents flat of Bb or 70 cents sharp of A . The speed discrepancy mentioned in that article is 4 %. If I increase the speed of the audio by 4 %, it puts it pretty much exactly in tune in Bb . Only a 2 % reduction is needed to tune it to A . I . e . , if 4 % is the correct figure , then the original was in Bb and the video has been reduced from 25 fps to 24 fps . I think I have the math right . The sound of the voice is noticeably different in each case , of course , but it ' s hard to tell which sounds more real given the production . It sounds more convincingly human to me in A , but that would mean the video has only increased in speed by 2 %.<| sep |> Because feast doesn ' t have the same meaning in Orthodoxy . Feast talks about a major day i . e . St . Catherine . For instance , the Feasts of the Exaltation of the Cross and of the beheading of St . John the Baptist are fast days due to what is being commerated .