The "centenaries" refer to two 100-year anniversaries. The appeal also went towards building the new Centenaries Theatre. In 1974 two awards were made to mark the centenaries of the two societies. He is vice-chair of the government's Expert Advisory Group on the Decade of Centenaries. May. A portable altar also enables the Centenaries Theatre to be used for school Masses. As a consequence, both the Guild and the University officially celebrated their centenaries in 2000.