All Saints' Day is a Christian holy day celebrated on November 1st to honor all saints, both those recognized by the Church and those who are not, and to remember that the living are in communion with the saints who have died. It is a time to celebrate those who have lived lives of extraordinary faith and to find encouragement from their example.
It is a Holy Day of Obligation in most years; however, not when if falls on a Saturday (When a holy day of obligation falls on a Saturday, the obligation to attend Mass may be lifted for certain feasts, but for others, Catholics are still required to attend Mass on that day in addition to Sunday).