According to tradition and several written sources, on March 25 (6 April in the
Gregorian calendar), the Feast of
Annunciation, 1821, Bishop Germanos proclaimed the
Greek national uprising against the
Ottoman Empire and blessed the flag of the revolution at the Monastery of
Agia Lavra. Earlier, another revolt of the
Greek War of Independence had also been declared on February 21 by
Alexandros Ypsilantis in
Iaşi, which was crushed by June 1821. ==References==