🇺🇸 ChristmasChristmas Day

Christmas (December 25) commemorates the nativity of Jesus in the Western Christian tradition. The date itself was set by the Roman church in the 4th century — likely chosen to align with existing winter-solstice observances — and the modern bundle of customs (the tree, Father Christmas / Santa Claus, the carol service, the family meal) consolidated in 19th-century Britain, Germany, and the United States, then diffused globally as the secular commercial holiday of the modern era.

In the United States it is one of eleven federal holidays. Federal offices, banks, the postal service, the stock market, schools, and the overwhelming majority of private employers close. December 26 is not a federal holiday but is widely treated as a half-day or PTO recovery day; many companies close the entire week between Christmas and New Year's.

In the UK, Ireland, Australia, New Zealand, Canada, and most of the Commonwealth, December 26 — Boxing Day — is also a public holiday, producing a guaranteed two-day close. In South Korea, December 25 is a public holiday but December 26 is not. In Japan, neither day is a public holiday: Christmas is a romantic / commercial date observed by a fried-chicken-and-strawberry-cake dinner culture but not a day off work.

For PTO planners Christmas is the single most efficient bridge window of the year: in any given year, 3–5 PTO days strategically placed around Dec 25 and Jan 1 produce a 10–14 day continuous break — unmatched by any other holiday cluster. Many large US employers make this implicit by closing offices entirely between Dec 24 and Jan 2.

Travel volume peaks twice — outbound (Dec 22–24) and return (Jan 2–4). The travel surge is almost as severe as Thanksgiving but spread over a longer window, so individual days are less catastrophic but the entire stretch is congested. Domestic flight prices peak on Dec 23 and Dec 26; international long-haul prices peak even higher.