The Confederation Congress convenes on September 28, 1787 agreeing to submit the new written Constitution to the states for ratification; starting the process to transition the government of the United States to operate under the newly written Constitution. It establishied March 4, 1789, as the date the new government would convene.
On September 13, 1788, the Congress declared that the Constitution had been ratified and set dates for choosing electors, electing the President, and the commencement of the new government. The Confederation Congress continued to operate in New York City until March 2, 1789, just two days before the new government took over. On March 4, 1789, the government officially transitioned, with the new U.S. Congress convening, though a quorum was not officially reached until early April.
