• Our Lady of Czestochowa. Poland. Very detailed history of the Virgin rescuing Czestochowa from invaders in the mid-17th Century. Black Madonna. Moveable feast -- last Wednesday [29 Aug 2012] of August. (www.marylinks.org/Mary-Calendar.htm) • Our Lady of Czenstochowa (Poland). Moveable feast -- Last Wednesday [29 Aug 2012] of August. (maryfest.htm / www.starharbor.com/santiago/m_feasts.html)