August 21st (1879) was a Thursday. It's the 233rd day of the year (234th in leap years) in the Gregorian calendar. There are 132 days left to the end of the year.
Historical Events for 21st August, 1879
» The Virgin Mary, along with St. Joseph and St. John the Evangelist, reportedly Marian apparition or appears at Knock Shrine in Knock, County Mayo, Ireland.