Context: 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.

Question: How many parts did the Gregorian calendar reform have?
Answer: two parts

Question: What was the first reform concerning the calendar?
Answer: Julian calendar

Question: What was the second reform of the calendar?
Answer: lunar cycle

Question: What was calculated using the lunar calendar?
Answer: date of Easter

Question: What did Lilius's calendar plan to reduce in every 400 years?
Answer: number of leap years

Question: How many parts did the Gregorian reform have?
Answer: Unanswerable

Question: What calendar was changed by the Julia reform?
Answer: Unanswerable

Question: What reform change the lunar cycle used by pagans?
Answer: Unanswerable

Question: Who oppose the proposal for the reform?
Answer: Unanswerable

Question: Whose reform included increasing the number of leap years and for centuries?
Answer: Unanswerable