When referring to dates, which form is correct? "on the 5th of November" or "on the 5th November"? [duplicate]

I was discussing this at work with a colleague today, which form (or both) is grammatically correct when referring to dates?

"on the 5th of November"

vs

"on the 5th November"


The correct answer is "on the 5th of November," because saying "on the 5th November" It makes it sound like you are talking about the 5th November, as in 5 years later.

You need the proposition [of] to make the sentence work.