Chapter 16-5

In summer, 2004 A.D., I almost made the theories of the old solar calendar of the Jews in Japanese which was my mother language.
The Julian calendar had 365.25 days in one year.
The Gregorian calendar had 365.2425 days in one year.
The scholars of Astronomy recommended the new calendar to the Pope for three hundred years.
The Julian calendar was one day longer than the Gregorian calendar of the Astronomy per 128 years. So, in 1582 A.D., St. Gregory XIII adopted the new calendar.
St. Gregory XIII deleted ten days from the calendar, and the next date of October 4 became October 15 of 1582 A.D.