Thanksgiving Day covers the Treaty of Paris. And always remember, if it wasn’t for France we might all be speaking with a British accent.
Encyclopedia of Greater Philadelphia | Thanksgiving
You're confusing things a bit with that statement.
First, if you read the article at the link you provided, you'll see that days of giving thanks, or days of thanks-giving, were proclaimed by State governments or the Continental Congress (and if I recall correctly, by Gen. Washington for the army one time) during the period of the American Revolution.
The Dec. 11, 1783 day of thanksgiving declared by the Continental Congress was not a celebration of the ratification of the Treaty of Paris (the event I was celebrating in my original post). The ratification did not take place until Jan. 14, 1784. The Continental Congress's decree stated the day of thanksgiving was "for the restoration of Peace and establishment of our Independence, in the Enjoyment of our Rights and Privileges."
The Treaty of Paris was signed on Sep. 3, 1783 at the Hotel d'York, in Paris, France, by John Adams, Benjamin Franklin, and John Jay (representing the United States) and David Hartley (representing Great Britain).
News of the signing arrived in the US in Nov. of 1783. The Continental Congress was scheduled to meet in Annapolis, Maryland at that time. The day of thanksgiving that they proclaimed for Dec. 11, 1783 was in reaction to the news of the signing. However, Congress had been having trouble getting delegates to attend (particularly in the second half of the American Revolution, and even more so after Congress left Philadelphia). The delegates present did not reach a quorum until Jan. 14, 1784 (if I recall correctly, it took a South Carolina delegate, Richard Beresford, electing to leave his sickbed in Philadelphia, and travel down to Annapolis, to allow the Continental Congress to reach the required number).