7. ''The Rudder'', Apostolic Canon 7, available at http://www.holytrinitymission.org/books/english/cannons_apostles_rudder.htm . Also ''The Rudder'', Cummings ed. (Chicago: The Orthodox Christian Education Society, 1957). The Rudder's words "after the Passover of the Jews" may simply refer to the paschalion's Paschal Full Moon, not to any date in the Jewish calendar. In practice, it is often understood to mean the 15th of Nisan in the Rabbinic Jewish calendar. See for example http://orthodoxwitness.org/over-the-rooftops/how-the-date-of-pascha-is-determined/2/ (Last visited April 15, 2015) where the author states that Pascha in 2015 is set to April 12 2015 to avoid coinciding with "the Jewish Passover" which he dates (incorrectly) to April 5, and that Pascha 2016 is set to May 1 to avoid coinciding with the Jewish Passover which he dates to April 22. This last date corresponds to 14 (not 15) Nisan 5776 and so is the Jewish Passover in a strict sense, but April 22, 2015 is a Friday, not a Sunday. In any case, the author clearly uses "Jewish Passover" to refer to a date on the Jewish calendar, and not to the paschalion's Paschal Full Moon, which falls on Tuesday, April 7 in 2015 and on Tuesday, April 26 in 2016. James Campbell, cited in Reference 4 above, also indicates says that he believes the Gregorian paschalion violates the Nicene rule "that Pascha is not to coincide with the full moon, but to follow it"after Passover" rule requires an external reference and that it is a mistake to the Rabbinic Jewish calendar when he accuses the Gregorian paschalion treat this error as a violation of violating the ruleApostolic Canon 7. (Reference 4 above, text at footnote 14.)