Christmas is an annual festival celebrated on December 25th, commemorating the birth of Jesus Christ. It's a central liturgical feast in Christianity, with preparations beginning on the First Sunday of Advent, followed by Christmastide. Historically in the West, Christmastide lasts twelve days, culminating on Twelfth Night. Christmas Day is a public holiday in many countries and is observed religiously by most Christians, while also being culturally celebrated by many non-Christians, marking an integral part of the holiday season.
In 1902, the German-American cartoonist Thomas Nast, one of the contributors to the modern Santa Claus image, died.
In 1904, the first Christmas seal was issued in Denmark to raise funding to fight tuberculosis and bring awareness to the disease.
During the Christmas truce in 1914 of World War I, football games were played between opposing sides.
In 1914, during World War I, informal Christmas truces occurred between opposing armies. These truces included promises not to shoot, socializing, gift-giving, and even sports between enemies.
In 1917, following the foundation of the Soviet Union, Christmas celebrations were prohibited in public due to the state's atheism.
Following the Council of Constantinople in 1923, several Orthodox Christians jurisdictions began using the Revised Julian calendar, which corresponds exactly to the Gregorian calendar.
Since 1923, the Armenian Church in Armenia has used the Gregorian calendar.
In 1929, on Christmas Day, children in Moscow were encouraged to spit on crucifixes as a protest against the holiday, part of a larger campaign against Christmas traditions by the League of Militant Atheists.
In 1946, the traditional carol "Hark! The Herald Angels Sing" was featured in the film "It's a Wonderful Life".
In 1965, the last Christmas Day football fixture in England occurred, with Blackpool beating Blackburn Rovers 4–2.
In 1984, the U.S. Supreme Court ruled in Lynch v. Donnelly that a Christmas display owned by the city of Pawtucket, Rhode Island, did not violate the First Amendment.
In 1991, with the dissolution of the Soviet Union, the persecution of Christmas ended, and Orthodox Christmas became a state holiday again in Russia after seven decades.
It is estimated that in 2001, Christmas resulted in a $4 billion deadweight loss in the US alone due to the effect of gift-giving.
In 2002, 20.8 million live Christmas trees were cut in the United States.
In November 2004, expenditure in department stores nationwide rose to $20.8 billion.
In December 2004, expenditure in department stores nationwide rose to $31.9 billion, an increase of 54 percent compared to November.
In 2004, the Christmas Day (Trading) Act prevented all large shops from trading on Christmas Day in England and Wales.
In 2007, similar legislation to the Christmas Day (Trading) Act was approved in Scotland.
In 2010, a survey by LifeWay Christian Resources found that six in ten Americans attend church services during the Christmas season.
In 2010, the Ancient Church of the East decided to celebrate Christmas according to the Gregorian calendar date, though it follows the Julian calendar.
In 2010, up to £8 billion was expected to be spent online at Christmas in the UK, approximately a quarter of total retail festive sales.
In 2015, the Church of England reported an estimated attendance of 2.5 million people at Christmas services.
In December 2018, Chinese officials raided Christian churches prior to Christmastide and coerced them to close; Christmas trees and Santa Clauses were also forcibly removed.
In 2023, public Christmas celebrations were cancelled in Bethlehem due to the ongoing Israel–Hamas war, as decided by Palestinian Christian leaders.
As of 2024, there is a 13-day difference between the Julian calendar and the Gregorian calendar, meaning that December 25 on the Julian calendar corresponds to January 7 on the Gregorian calendar.