> In common usage, 1 January was regarded as New Year's Day and celebrated as such,[40] but from the 12th century until 1751 the legal year in England began on 25 March (Lady Day).[41] So, for example, the Parliamentary record lists the execution of Charles I on 30 January as occurring in 1648 (as the year did not end until 24 March),[42] although later histories adjust the start of the year to 1 January and record the execution as occurring in 1649.[43]

Super interesting, thanks!

Today I learned.