11. When the epact goes above 29 an intercalary month is added and 30 is subtracted. 12. It regulates the 19-year cycle of intercalary months of the modern Hebrew calendar. 13. The intercalary day is never inserted except in a year which has an intercalary month. 14. The intercalary day is never inserted except in a year which has an intercalary month. 15. The first 22 or 23 days of the intercalary month were inserted between these two parts. 16. The "'Coligny calendar "'is a peg calendar or intercalary months. 17. If any of the red intercalary zones are included, their sum has to be subtracted. 18. It may grow by intercalary growth. 19. The intercalary month is still the second Adar, initially determined by agricalutral observations in Israel. 20. The red or blue fields in zones 5, 7, 16 and 17 are intercalary zones.
