Dr. Dick Henry of John Hopkins University has developed a leap week calendar called the Hanke Henry Calendar. The Hanke Henry Calendar uses months with the lengths of 30:30:31 (i.e. 30-30-31–30-30-31–30-30-31–30-30-31, +7 in leap year). But, as in Dr. Bromberg’s Symmetry Calendars, he uses the names of the current months of the Gregorian Calendar for the names of the months in the Hanke Henry Calendars. This can cause some confusion when trying to determine to which calendar the given date refers. *W53-7 in year after leap week.