'- 16 November 1814 - Madison makes a proclamation'

'- 12 January 1815 - Day of Thanksgiving '

'- 15 January 1815 - Three days after giving thanks, General Andrew Jackson defeated the British in New Orleans!'

I have deemed it proper by this proclamation to recommend that Thursday, the 12th of January next, be set apart as a day on which all may have an opportunity of voluntarily offering at the same time in their respective religious assemblies their humble adoration to the Great Sovereign of the Universe, of confessing their sins and transgressions, and of strengthening their vows of repentance and amendment.

http://festivals.iloveindia.com/thanks-giving/presidential/before-lincoln/1814.html