The feast of Don Bosco is January 31.
December 27 is the feast day of Saint John the Apostle.
St. John Eudes' feast day is August 19
January 31 is the feast of Saint John Bosco.
The feast day of Pope Saint John Paul II is on October 22.
The feast of the Nativity of John the Baptist is June 24.
January 5 is the feast of St. John Neumann.
Saint John of God's feast day is celebrated on March 8th on the liturgical calendar of the Universal Church.
There are more than a hundred saints named John and each one has a feast day.
Saint John's feast day is celebrated on June 24th each year.
The feast of Saint Elizabeth is November 5.
There is no Saint John memorialized on May 5. However, the feast of Blessed John Hale (or Haile) is celebrated that day.
I can find no saint named Jonathan. However, there are a hundred or more saints named John, each with a different feast day.