The Western world celebrates All Hallows’ Eve (aka Halloween) today, and All Hallows’ Day tomorrow. This is the day when all saints, both known and unknown, are commemorated. In some places, commemoration of the dead continues on November 2 in the form of Day of the Dead, with people building personal altars to honor their loved ones. The altars usually include the favorite food and drink of the deceased, and these items are brought to the grave of the departed at the end of the day when family and friends gather there to pray.
In the Orthodox Church, we commemorate All Saints Day – or All Hallows’ Day, on the first Sunday after Pentecost. Rather than dressing up in scary costumes, we commemorate the day with Vespers the evening before, and Orthros & Liturgy the day of 🙂