ong Summers, and Short Years. In a 38 year cycle there are 21 Long Summers, 10 Long Winters, and 7 Short... Years have 12 Moons, and last exactly 342 days. Where the Spring Moon starts less than 12 days after the spring equinox then there's a 'Long Summer', which is always followed by a 'short winter. If there isn't a Long Summer, and the Fall Moon starts wit