Gregorian calendar Reform in the Era of Primož Trubar

Abstract

The reception of gregorian calendar reform at Protestant Lands with Carniola included was described. Maestlin’s antipathy of Pope and Clavius’ reform proposition was connected with the Protestant astronomers’ fear of roman critique of astrology and Copernican innovations, because the horoscopes gave everyday bread to many astronomers. The opposite party got strong support with the standpoints of Ljubljana rector Frischlin with his sharp critique of copernicus included. The Protestant Maestlin versus Frischlin quarrel originated at their mutual competition for the same astronomy chair at Tübingen university. The opinions of Carniolans were mirrored at their libraries containing several important pieces of calendar quarrels, among them two important Clavius’ defences of the new calendar.