On Christmas this year, there will be a moment when the number "25" overlaps four times. It is the so-called "Quadruple Christmas."
Quadruple Christmas refers to the moment on Dec. 25 at 12:25:25 in a year when the last two digits of the year are 25.
This year, 12:25:25 a.m. and 12:25:25 p.m. on Dec. 25, 2025, fall under Quadruple Christmas.
Because the year, date, minute, and second all have to align at 25, it comes once every 100 years. The previous Quadruple Christmas was in 1925, and the next will not arrive until 2125.
Online communities and social media (SNS) saw a string of posts saying it is "a once-in-a-lifetime chance," pledging to record the moment of Quadruple Christmas. They plan to capture cellphone screens or digital billboards at the exact time.