A "festival" is a celebration (feast day) celebrating some common or religious event.
Judas Isacriot was an apostle but is not a saint. Therefore, no feast day.
July 3 is the feast of St. Thomas the Apostle.
December 27 is the feast day of Saint John the Apostle.
The feast of Saint Matthew the Apostle is celebrated on September 21.
The feast day of Saint Matthew the Apostle is on September 21.
Most religious festivals take place on religious feast days. The day before a religious feast day is known as a "vigil" or watching. Vigils are days of fast and penance in order that the faithful may root out vice in themselves and gain the necessary disposition and virtues to celebrate the feast day in a virtuous spirit.
The feast of St. Thomas the Apostle is July 3.
A "festival" is a celebration (feast day) celebrating some common or religious event.
2 december
Judas, the apostle who betrayed Our Lord, is not a saint and, therefore, has no feast day.
The feast day of Saint Boniface, the Apostle of Germany, is on June 5.