January 1 – Solemnity of Mary  Ascension Thursday - Feast of the Ascension of the Lord   In the Diocese of Rockville Centre the Feast is celebrated on Thursday, 40 days after Easter.   For 2008 Ascension Thursday is May 1  August 15 – Feast of the Assumption of the Blessed Virgin Mary November 1 – All Saints Day December 8 – Feast of the Immaculate Conception Mass Schedule for Holy Days Vigil           8:00 pm on the evening before the Holy Day When there is a Holy Day vigil mass there is no 5:30 pm mass Holy Day           6:30 am            9:00 am          12:15 pm            5:30 pm             8:00 pm