The Gregorian reform contained two parts: a reform of the Julian calendar as used prior to Pope Gregory XIII's time and a reform of the lunar cycle used by the Church, with the Julian calendar, to calculate the date of Easter. The reform was a modification of a proposal made by Aloysius Lilius. His proposal included reducing the number of leap years in four centuries from 100 to 97, by making 3 out of 4 centurial years common instead of leap years. Lilius also produced an original and practical scheme for adjusting the epacts of the moon when calculating the annual date of Easter, solving a long-standing obstacle to calendar reform. COUNT 5
QSN1 How many parts did the Gregorian calendar reform have? ANS1 two parts QSN2 What was the first reform concerning the calendar? ANS2 Julian calendar QSN3 What was the second reform of the calendar? ANS3 lunar cycle QSN4 What was calculated using the lunar calendar? ANS4 date of Easter QSN5 What did Lilius's calendar plan to reduce in every 400 years? ANS5 number of leap years