History Trivia - 607 Halley's Comet recorded

March 13

483 Felix III became pope.  He repudiated the Henoticon, a deed of union originating with Patriarch Acacius of Constantinople and published by Emperor Zeno with the view of allaying the strife between the Miaphysite Christians and Chalcedonian Christians.  This renunciation initiated the Acacian schism between the Eastern and Western Christian Churches that lasted thirty-five years. 

607  12th recorded perihelion passage of Halley's Comet.