Month lengths also differ. See also ScopeSys , which covers all days and has more entries. The Greek Orthodox Church commemorates Saint John Cassian. Also, I know of few interesting events on February 24th of leap years. Year Repeats For more detail, see Repeats and Easter .
All types occur.
Therefore years must repeat, on the average, every 14 years. The full leap year rules have a period of 400 years. See also links in miscdate.htm . Originally it had been intended that he would enter the harbour service, but due to an error this did not happen, and he entered a less reputable sea-trade. In 1873 the error was admitted, but paradoxically it appeared necessary for him to continue thus for an extended period.