New Year
From Tardis Wiki, the free Doctor Who reference
File:Rose meets the Doctor The End of Time Doctor Who BBC New Year referred to the time at which a new year began. On Earth, 31 December was New Year's Eve, (TV: Doctor Who) and 1 January was New Year's Day. (TV: The End of Time, Resolution)
Operating according to time zones, parts of the world welcomed in the New Year one by one. (TV: Fragments)
Behind the scenes
Beginning in 2019[update], Doctor Who New Year Specials aired on 1 January, between seasons. Like the Christmas variant which came before it, the New Year Special is set on the holiday, New Year, and features themes relevant to New Year traditions.