For John, BLUF: A day to say thanks. Nothing to see here; just move along.
They are all the same day.
From the Armistice between Germany and her opponents in World War I. The agreed time was 11 o'clock (not 11:11), on 11 November 1918.
It was the end of fighting on the Western Front, but not the end of fighting everywhere. There was still fighting in what would become Poland, in parts of the Middle East, and within Russia.
Remembering our Service Members, all sacrificed, as did their families, but some sacrificed all.
Regards — Cliff