All Saints Day was formally started by Pope Boniface IV, who consecrated the Pantheon at Rome to Mary and all the Martyrs on May13 in
609 AD. All Souls Day was celebrated the day after. In the mid-eighth century, Pope Gregory III established November 1 as a day
dedicated to the Saints and their relics; the May 13 celebration was then abandoned. By decree of Pope Gregory IV and Louis the Pious, November 1 became a holy day of obligation, and remains so to this day.
All Souls Day follows All Saints Day, but is not a holy day of obligation. St. Ann Masses for All Saints Day and All Souls Day:
All Saints Day Vigil Mass: October 31 at 4:00p.m.
Holy Day Masses: November 1 at 8:30 a.m. & 7:00 p.m.
All Souls Day Mass of Remembrance: Nov. 2 at 8:30 a.m