Pope John I has only begun the sainthood process and does not yet have a feast day.
October 22 is his feast day.
The feast day of Pope Saint John Paul II is on October 22.
October 22nd
August 21 is the feast day of Pope Saint Pius X.
Pope Benedict I is not a saint and has no feast day.
Pope Benedict XVI is still alive, so he does not have a feast day. The feast of St. Benedict, a 6th century monk, is July 11th.
The feast day of Pope Saint Leo the Great is November 10.
The feast day of Pope Saint Leo the Great is on November 10.
December 27 is the feast day of Saint John the Apostle.
St. John Eudes' feast day is August 19
There are dozens of St. Sylvesters, and one of them was Pope (314-335). His feast day is December 31st.
The Feast of the Chair of St. Peter is on February 22.