No More Learning

Instead of the four years of the Greek cycle, each           of six months of 30 and six of 29 days and an intercalary month inserted every second year alternately of 29 and 30 days (354+ 384+
54 383 = 147 days), the Roman calendar substituted four years, each containing four months-the first, third, fifth, and eighth-of 31 days and seven of 29 days, with a February of 28 days during three years and of 29 in the fourth, and an intercalary month of 27 days inserted every second year (355 383 355 382 = 1475 days).