original_query: What is the significance of the arrival of Saint Thomas the Apostle in Muziris?
query: What is the significance of the arrival of Saint Thomas the Apostle in Muziris according to this timeline of the Syro-Malabar Catholic Church?
answer: According to this timeline, the arrival of Saint Thomas the Apostle in Muziris (near Kodungalloor) in AD 52 is considered the founding event of the Syro-Malabar Catholic Church in India, as he established churches in several locations in Kerala.