The Sacred Year of Israel

In first century Israel there was a Sacred year, and a Civil year. The Sacred year began in late March, and Nisan was the first month. The Civil began in October, and Tishri was the first month. The 7th Sacred month was the 1st Civil month. The year was divided into 12 lunar months, with an Intercalary month (a 13th month 7 times in every 19 years).