There are many St. Michaels in Christianity, but the most popular is St. Michael the Archangel. Many saints have their feast day on the day of their deaths, but since St. Michael is an angel he never died. Instead he is honored on September 29th along with his fellow Archangels Gabriel and Raphael.
St. Michael's Feast Day is September, 29.
Pope Benedict I is not a saint and has no feast day.
Saint Maria Goretti's Feast Day is July 6th.
Saint Christopher's feast day is July 25th.
Saint Laura's Feast Day is October the 19th.
The 23rd of April is the feast day of Saint George.
Saint Helena's feast day is August 18.
The feast day of saint Mark is April 25.
July 24 is the feast day of Saint Charbel.
August 11 is the feast day of Saint Philomena.
November 22 is the feast day of Saint Cecilia.
The feast day of Saint Apollonia of Alexandria is on February 9.
The feast day of Saint Anastasia of Sirmium is on December 25.