All Saints' Day
All Saints' Day, or in common speech All Saints, (also called, in various denominations, The Feast of All Saints, The Solemnity of All Saints, and less frequently by the older terms All Hallows or Hallowmas) is a Christian festival holiday celebrated in honour of all saints, known and unknown. It is usually a Holy Day of Obligation in churches that have such a designation.
The day is celebrated on the 1st of November in the Western Church, and on the first Sunday after Pentecost in the Eastern Church. It is a national holiday in some countries.
All Saints is normally a joyous holy day. Traditions vary widely among denominations, but some common themes are the singing of special chants and hymns, and the special remembrance of departed family members and congregants.