Is "King Charles 111" the First Marker?
King Charles 111 = 11:3
On the date of Queen Elizabeth 11's death, Charles became King so that date could be the "first marker" … and …
The date of Charles' upcoming Coronation could also be significant as in, "once 11:3 CONFIRMS as first marker" - that is, once Charles is officially crowned, 11:3 is confirmed.