Feast of St.Thomas is cleberated from 23rd June 2006 to July 3rd 2006 at National Shrine of St.Thomas Basilica.
23rd June 2006 Friday - Flag Hoisting - Rt.Rev.Dr.Lawrence Pius, Auxiliary Bishop of Madras-Mylapore Archdiocese.
25th June 2006 Sunday - Solem Pontifical High Mass followed by Eucharistic Procession - Most Rev.Dr.A.M.Chinnappa SDB, Ph.D.Archbishop of Madras-Mylapore.
1st July 2006 Saturday - Solem High Mass- His Grace Most Rev.Jorge Ferreira da Costa Ortiga, President of Portugal Episcopal Conference.
2nd July 2006 Sunday - Solem Pontifical High Mass -His Excellancy Most Rev.Pedro Lopez Quintana, Apostolic Nuncio, India.
3rd July 2006 Monday - Feast of St.Thomas , Lowering of the Flag.

The Underground Tomb Chapel of St.Thomas at Santhome Cathedral Basilica has been built to enable pilgrims coming from different parts of the country and all over the world to participate in group Eucharistic celebrations, pray and venerate the relic of St.Thomas, while the services are being held at the Basilica.

Santhome Cathedral Basilica is the only one in India and one of the three in the world, built over the tomb of an apostle of Christ. The Underground Tomb Chapel also houses the Relic of St.Thomas.

Conference of Catholic Bishops' of India (CCBI) elevated Santhome Cathedral Basilica to the status of a National Shrine on 11th February 2006.