Original: Knock 's notability derives from the Apparition of 1879 , when , at 8.00 PM on 21 August 1879 , it was reported that the Virgin Mary , together with St Joseph and St John the Evangelist , appeared to local people .
Simplified: At 8.00 PM on 21 August 1879 , it was reported that the Virgin Mary , together with St Joseph and St John the Evangelist , appeared to local people .