ike the solstices and the equinoxes to divide the years into three types, Long Winters, Long Summers, and Short Years. In a 38 year cycle there are 21 Long Summers, 10... the Spring Equinox. Long Summers and Long Winter years have 13 moon cycles, and last 370-371 days. The Short Years have 12 Moons, and last exactly 342 days. Where t... name, based on the more common activities in most years when it appears, or the major festivals of the go