John Climacus
Saint John's feast day is March 30 in both the East and West. The Eastern Orthodox Church and the Byzantine Catholic Churches additionally commemorate him on the Fourth Sunday of Great Lent. Many churches are dedicated to him in Russia, including a church and belltower in the Moscow Kremlin. John Climacus was also known as "Scholasticus," but he is not to be confused with John Scholasticus, Patriarch of Constantinople.