Blue Christmas (holiday) Wikipedia
Blue Christmas, also called the Longest Night in the Western Christian tradition, is a day in the Advent season marking the longest night of the year. On this day, some churches hold a church service that honours people who have lost loved ones in that year. The Holy Eucharist is traditionally a part of the service of worship on this day. Some churches hold a service of worship on the longest night of the year, which falls on or about December 21st, the Winter Solstice. There is an interesting convergence for this day as it is also the traditional feast day for Saint Thomas the Apostle. This linkage invites making some connections between Thomas's struggle to believe the tale of Jesus' resurrection, the long nights just before Christmas, and the struggle with darkness and grief faced by those living with loss.