Introduction
Calendar Reform Commission
This book deals with the historical development of the most widely-used calendar in the world: the Gregorian calendar. Named after Pope Gregory XIII, who commissioned it in the 16th century, we will focus our attention on the founding principles and the key mathematical concepts that make up the basics of this calendar. The calculation of Easter Sunday will receive particular attention, and a number of easy-to-read tables will be provided to complement your reading.
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