Mass will celebrate 10th anniversary of John Paul II's canonization

April 27 will mark 10 years since the historic moment when John Paul II was raised to the altar of the saints.

The Vatican will celebrate the tenth anniversary of his canonization with a Mass.

Organized by the John Paul II Vatican Foundation, the Mass will be held in St. Peter's Basilica at 5:00 pm. The Dean of the College of Cardinals, Giovanni Battista Re, will preside.

This was a very special day for the thousands of Catholics who filled the area around St. Peter's Square that morning in April 2014 to witness this unique moment.

On that day, Francis canonized not one but two popes. In addition to his Polish predecessor, he canonized John XXIII, who was the driving force behind the Second Vatican Council. Pope emeritus Benedict XVI was also present at the celebration. For this reason, April 27 has been remembered as "the day of the four popes."