Regnal years of English and British monarchs

The regnal years of English and British monarchs are the official regnal years of the monarchs of the Kingdom of England from 1066 to May 1707, the Kingdom of Great Britain from May 1707 to January 1801, and the United Kingdom since January 1801. The regnal calendar ("nth year of the reign of King X", abbreviated to "n X", etc.) continues to be used in many official British government and legal documents of historical interest, notably parliamentary statutes.