All Saints's Biography
The festival of All Saints, also sometimes known as All Hallows or Hallowmas ("hallows" meaning "saints," and "mas" meaning "Mass"), is a feast celebrated in the honour of all the saints, known and unknown. Halloween is the day preceding it, and is so named because it is "The Eve of All Hallows". All Saints is also a Christian formula invoking all the faithful saints and martyrs, known or unknown.
The Western Christian holiday (called in Latin) falls on November 1, followed by All Souls' Day on November 2, and is a Holy Day of Obligation in the Latin Rite Roman Catholic Church, with a vigil and an octave.
Among the Eastern Orthodox and Eastern Catholics, All Saints Sunday (Greek
Source: Wikipedia
