Off Fr Z’s blog, quoting the USCCB, quoting the Annus Fidei (Year of Faith) website:
On the Solemnity of Corpus Christi, the Holy Father will preside over a special Eucharistic adoration that will extend at the same time all over the world involving the cathedrals and parishes in each diocese. For an hour, at 5 PM (Rome time), the whole world will be united in prayer and adoration of the Blessed Sacrament.
Imagine. 1.1 billion Christians, praying at the same time. Nearly 1/6 of the world’s population.
Okay … say 10% will do this. 100 million. It could still be very powerful. The world needs this to be done.