Mass in St. Peter's Basilica celebrating Pope Pius XII's 80th birthday and 17th anniversary of his coronation

The video covers the celebrations in St. Peter's Basilica for Pope Pius XII's 80th birthday and 17th coronation anniversary. It highlights the attendance of delegations from 51 countries and 28 cardinals. A pontifical mass is celebrated by Cardinal Tisseron, but a snowstorm cancels the outdoor benediction. Despite the weather, Pope Pius blesses the crowd from his study window.

What was the occasion for the celebrations at St. Peter's Basilica?

• A religious festival

• The inauguration of a new Pope

• The opening of a new church

• Pope Pius XII's 80th birthday and 17th coronation anniversary

How many countries sent official delegations to the event?

• 17

• 28

• 51

• 35

Who celebrated the pontifical mass at the Altar of the Confession?

• Archbishop of Paris

• Pope Pius XII

• Cardinal Tisseron

• Archbishop of Buenos Aires

Why was the outdoor benediction by the Pope canceled?

• Technical difficulties

• Pope's health issues

• A snowstorm

• Security concerns

From where did Pope Pius give his blessing to the multitudes?

• The Vatican balcony

• The Altar of the Confession

• St. Peter's Square

• His private study window