He made friends with the Austrian astronomer Georg von Peuerbach and advocated a reform of the Julian calendar and the Easter computus, which, however, was not realized until the introduction of the Gregorian calendar in 1582.
Fixo amizade co astrónomo austríaco Georg von Peuerbach e avogou por unha reforma do calendario xuliano e o computus de Pascua que non se realizou ata a introdución do calendario gregoriano en 1582.