Twelve lunar months, a total of 354 days - 11¼ d. shorter than the Solar year. Its point of beginning passes through the circle of seasons in about 34 lunar years. It is used by modern Jews and Mohammedans. In the early days of Greece the year was regulated entirely by the Moon, and Solon was among the first who attempted to reconcile the Solar and Lunar years by a system of intercalations.