<P> Through enactment of the Calendar ( New Style ) Act 1750 , Great Britain and its colonies ( including the eastern part of what is now the United States ) adopted the Gregorian calendar in 1752 , by which time it was necessary to correct by 11 days . Wednesday , 2 September 1752 , was followed by Thursday , 14 September 1752 . Claims that rioters demanded `` Give us our eleven days '' grew out of a misinterpretation of a painting by William Hogarth . In Great Britain , the term `` New Style '' was used for the calendar and the Act omits any acknowledgement of Pope Gregory : the Annexe to the Act established a computation for the date of Easter that achieved the same result as Gregory 's rules , without actually referring to him . </P>
<P> Through enactment of the Calendar ( New Style ) Act 1750 , Great Britain and its colonies ( including the eastern part of what is now the United States ) adopted the Gregorian calendar in 1752 , by which time it was necessary to correct by 11 days . Wednesday , 2 September 1752 , was followed by Thursday , 14 September 1752 . Claims that rioters demanded `` Give us our eleven days '' grew out of a misinterpretation of a painting by William Hogarth . In Great Britain , the term `` New Style '' was used for the calendar and the Act omits any acknowledgement of Pope Gregory : the Annexe to the Act established a computation for the date of Easter that achieved the same result as Gregory 's rules , without actually referring to him . </P>
when did the united states adopt the gregorian calendar
when did the united states adopt the gregorian calendar
1752
1752