They only started numbering them later. AP Was There: Armistice brings World War I to an end.
BULLETIN
WASHINGTON, MONDAY, NOV. 11 [1918] — The Armistice between Germany, on the one hand, and the Allied governments and the United States, on the other, has been signed.
The State Department announced at 2:45 o’clock this morning that Germany had signed.
The world war will end at 6 o’clock this morning, Washington time, 11 o’clock Paris time.
And
WAR IS OVER
WASHINGTON, NOV. 11 [1918] — The greatest war in history ended Monday morning at 6 o’clock Washington time, after 1,567 days of horror, during which virtually the whole civilized world had been convulsed.