In the Easter Calendar, Easter itself is set as New Year. Each year begins with a Sunday and ends on Saturday, hence it’s a week calendar, but not a leap week calendar. There are years with 50, 51, 54 or 55 weeks. (For example in the years from 1900 to 2200 there are 120 years with 51, 92 with 55, 70 with 50 and 19 with 54 weeks.) The idea for the calendar style is based new on a calendar attempt of Rudolf Steiner, described in the lecture “Secrets of the kingdom of heaven in parables, in actual form”, hold in Cologne on May 7, 1912, for members of the Theosophical Society.