Why ehiopia has 13 month in a year?

Ethiopia follows the Ethiopian calendar, which has 13 months: 12 months of 30 days each and an additional month called Pagumē with 5 or 6 days, depending on whether it's a leap year. This calendar is approximately seven to eight years behind the Gregorian calendar due to differences in calculating the birth year of Jesus Christ. The Ethiopian calendar is rooted in ancient traditions and reflects the country's unique cultural and historical identity.