regnal year

Regnal year: the year of the reign of a sovereign. From Latin regnum meaning kingdom, rule.In ancient times, calendars were counted in terms of the number of years of the reign of the current monarch. The oldest such reckoning is preserved in the Sumerian king list.In England, and later the United Kingdom, until 1963, each Act of Parliament was defined by its serial number within the regnal year in which it was enacted. Each regnal year begins on the anniversary of the day the sovereign succeeded to the throne. A table of English regnal years, from 1066 to 1962, is given here.
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