The annual Oriental Orthodox conceleberation of the Divine Liturgy was held on 5th May, 2011 at the St. Mary's Coptic Orthodox Church, California. The concelebrants were :
His Eminence Mor Clemis Eugene , Syriac Orthodox Archbishop of the Western USA
His Grace Bishop Serapion , Coptic Orthodox Bishop of Los Angeles
His Eminence Moushegh Mardirosian, Archbishop of the Armenian church
They were assisted by large number of Priests.