Arnošt of Pardubice becomes the last Bishop of Prague (3 March 1343 O.S.), and, a year later, the first Archbishop of Prague.

Arnošt of Pardubice was the first Archbishop of Prague. He was also an advisor and diplomat to Emperor Charles IV.

The following is a list of bishops and archbishops of Prague. The bishopric of Prague was established in 973, and elevated to an archbishopric on 30 April 1344. The current Roman Catholic Archdiocese of Prague is the continual successor of the bishopric established in 973. In addition, the city also has an Eastern Orthodox archeparchy (archbishopric), Greek Catholic exarchate and the Prague diocese and patriarchate of the Czechoslovak Hussite Church seat in Prague.

The Julian calendar is a solar calendar of 365 days in every year with an additional leap day every fourth year. The Julian calendar is still used as a religious calendar in parts of the Eastern Orthodox Church and in parts of Oriental Orthodoxy as well as by the Amazigh people. For a quick calculation, between 1901 and 2099 the much more common Gregorian date equals the Julian date plus 13 days.

March 11 is the 70th day of the year in the Gregorian calendar; 295 days remain until the end of the year.