August 21 is the feast day of Pope Saint Pius X.
Pope Clement XI is not a saint and has no feast day.
The feast of Pius X is August 21.
Roman Catholic AnswerPope Pius VI does not have a feast day as he has never been declared a saint.
Pope Benedict I is not a saint and has no feast day.
The feast day of Pope Saint Leo the Great is on November 10.
The feast day of Pope Saint Leo the Great is November 10.
There is more than one Pope Pius who have assigned feast days so you should be more specific.Pope Pius I - Formerly July 11 but suppressed since 1969St. Pius V - April 30Blessed Pius IX - February 7St. Pius X - August 21Ven. Pope Pius XII - no feast day assigned yet.
The feast day of Pope Saint John Paul II is on October 22.
Pope Saint Sixtus I - April 6 Pope Saint Sixtus II - August 7 Pope Saint Sixtus III - March 28
The Feast of the Chair of St. Peter is on February 22.
Pope Saint Sixtus I - April 6 Pope Saint Sixtus II - August 7 Pope Saint Sixtus III - March 28
Pope Pius X - as Pope, Joseph Melchiorre Sarto, was very much a traditionalist and sort to retrench from the modernist trends in Catholic doctrine in the early 20th century. After his death he was canonised as Saint Pius X - his feast day was originally set as September 3 before being moved by Pope John Paul II.
Pope Saint Sylvester I was pope from the year 314 until December 31, 335. His feast day is December 31.
Pius XII was elected on March 2, 1939.