Timeline of drafting and ratification of the United States Constitution Timeline of drafting and ratification of the United States Constitution The drafting of the Constitution of the United States began on May 25, 1787, when the Constitutional Convention met for the first time with a quorum at the Pennsylvania State House (now Independence Hall) in Philadelphia, Pennsylvania to revise the Articles of Confederation, and ended on September 17, 1787, the day the Constitution drafted by the convention's delegates to replace the Articles was adopted and signed. The ratification process for the Constitution began that day, and ended when the final state, Rhode Island, ratified it on May 29, 1790. In
Article One of the United States Constitution date. A fixed date also corresponded to the tradition in the states of having annual meetings. Finally, Gorham concluded that the legislative branch should be required to meet at least once a year to act as a check upon the executive department. Although this clause provides that the annual meeting was to be on the first Monday in December, the government established by the 1787 Constitution did not begin operations until March 4, 1789. As the 1st Congress held its initial meeting on March 4, that became the date on which new representatives and senators took office in subsequent years.