<P> The Signing of the United States Constitution occurred on September 17 , 1787 , at Independence Hall in Philadelphia , Pennsylvania , when 39 delegates to the Constitutional Convention , representing 12 states ( all but Rhode Island , which declined to send delegates ) , endorsed the Constitution created during the four - month - long convention . In addition to signatures , this endorsement , the Constitution 's eschatocol , included a brief declaration that the delegates ' work has been successfully completed and that those whose signatures appear on it subscribe to the final document . Included are , a statement pronouncing the document 's adoption by the states present , a formulaic dating of its adoption , along with the signatures of those endorsing it . Additionally , the convention 's secretary , William Jackson , signed the document to authenticate the validity of the delegate signatures . He also made a few secretarial notes . </P>
<P> The Signing of the United States Constitution occurred on September 17 , 1787 , at Independence Hall in Philadelphia , Pennsylvania , when 39 delegates to the Constitutional Convention , representing 12 states ( all but Rhode Island , which declined to send delegates ) , endorsed the Constitution created during the four - month - long convention . In addition to signatures , this endorsement , the Constitution 's eschatocol , included a brief declaration that the delegates ' work has been successfully completed and that those whose signatures appear on it subscribe to the final document . Included are , a statement pronouncing the document 's adoption by the states present , a formulaic dating of its adoption , along with the signatures of those endorsing it . Additionally , the convention 's secretary , William Jackson , signed the document to authenticate the validity of the delegate signatures . He also made a few secretarial notes . </P>
when was the constitution of the united states signed
when was the constitution of the united states signed
on September 17 , 1787
on September 17 , 1787