England Calendar Changes
Pre-1752 dates may be confusing. For example, the day after 24 March 1565 was 25 March 1566. Dates between 1 January and 24 March are often recorded using a technique called “double dating.” An example of a date using double dating is 16 February 1696/7. At the time it would be considered 1696 following the old Julian Calendar then in effect. Today it would be considered 1697 following the Gregorian Calendar now in effect.
Go to Regnal Years in England to read about how a monarch's reign influenced the English calendar.