Well, the previous day to Sept. 14th was Sept. 2nd, if it was 1752. So it's sorta the British/American annniversary of the Gregorian calendar.
My guess is you mean Francis Scott Key writing his famous poem as he watched the battle at Fort McHenry. Later set to an English drinking song, reportedly.
O say can you see, by the dawn's early light,
What so proudly we hailed at the twilight's last gleaming,
Whose broad stripes and bright stars through the perilous fight,
O'er the ramparts we watched, were so gallantly streaming?
And the rocket's red glare, the bombs bursting in air,
Gave proof through the night that our flag was still there;
O say does that star-spangled banner yet wave
O'er the land of the free and the home of the brave?
During the Revolution and War of 1812 the Brits promised freedom to slaves and indentured who joined on the side of the crown.
Americans? Not so much.
And where is that band who so vauntingly swore
That the havoc of war and the battle's confusion
A home and a country should leave us no more?
Their blood has wiped out their foul footstep's pollution.
No refuge could save the hireling and slave
From the terror of flight, or the gloom of the grave:And the star-spangled banner in triumph doth wave
O'er the land of the free and the home of the brave.
One of the reasons it took 117 years to become the national anthem was because the lyrics are racist as fuck.
1931 was near the height of the re-emerging of the Klan on a national level along with the burgeoning America First movement.