World Youth Day (WYD) is an event for young people organized by the Catholic Church.
World Youth Day was initiated by Pope John Paul II in 1984. For the first celebration of WYD in 1986, bishops all over the world were invited to schedule an annual youth event to be held every Palm Sunday in their dioceses. It is celebrated at the diocesan level annually, and at the international level every two to three years at different locations. The 1995 World Youth Day closing mass in the Philippines set a world record for the largest number of people gathered for a single religious event (with 7 million attendees).
The Church designated Blessed Teresa of Calcutta and Blessed Pope John Paul II as the patron saints of the event.