My argument is more than just being used to it, closely matching verbal convention is useful.
No, it’s not, because even in the states you say it like three different ways and the English language is constantly changing and inherently has no rules on what order you need to say them in. The choice of which way to express the 1st of January in the English language is purely a subjective one.
And I have explained what is objectively wrong with it, it’s out of order from a numerical time length standpoint.