This comes from Salvem a Liturgia (and google translate)......
During World Youth Day, the Old Cathedral of Rio will host a series of events for young pilgrims attached to the Extraordinary Form of the Roman Rite. So will the WYD Juventutem:
Tuesday, July 23
15:00 - Sung Mass
Wednesday, July 24
9:30 a.m. - Catechesis with S. Ex Revma. Don Fernando Arêas Rifan, bishop of the Apostolic Administration of St. John Vianney
10:00 am - Mass sung
18.00 - Solemn Pontifical Mass with S. Ex Revma. Don Fernando Arêas Rifan
Thursday, July 25
9:30 a.m. - Catechesis with S. Ex Revma. Don Fernando Arêas Rifan
10:00 am - Mass sung
15:00 - Mass sung
Friday, July 26
9:30 a.m. - Catechesis with S. Ex Revma. Don Fernando Arêas Rifan
10:00 am - Mass sung
15:00 - Mass sung
Saturday, July 27
No event because the priests with the Pope concelebrarão Francisco.
In addition, priests and religious of the Apostolic Administration are available for pastoral care, shelter and counseling to pilgrims daily from 09h00 to 12h00 and from 14h00 to 16h00.
Location: Church of Our Lady of Mount Carmel's Old Cathedral
Address: First March - Centro - Rio de Janeiro - RJ
Hours: 06h00 to 18h00
More information on the official page: Juventutem Rio 2013
Do not forget to also check the events created on Facebook for the whole week and the Pontifical Solemn.