I would say no, those aren't the correct pronunciations.
The problem with dates is that they have written representations, and they are also spoken, but the two aren't necessarily intertwined. In other words, when saying a date aloud, I don't generally read it, I simply say it.
As an analogy, this is not unlike reading math equations. I might see one of these on a written page:
- a2 + b2 = c2
- f(x) = x3 - cos(x)
but I would never say (or pronounce) those as:
- a superscripted two plus b superscripted two equals sign c superscripted 2
- f open parenthesis x close parenthesis equals x superscripted 3 dash cos open paren x close paren
(not unless I was in a typesetting shop).
Instead, I would say (or "pronounce") those as:
- a-squared plus b-squared equals c-squared
- f of x equals x cubed minus cosine x
There's a difference between a notation and a pronunciation; dates work much the same.
As an example, a letter might have a date in the upper right-hand corner, and it could look like any of these:
- September 13, 2012
- 13 Sep 12
- 9/13/12 (or, 13/9/12)
- 13/IX-2012 (as pointed out earlier, this format would be very rare)
But, let's say I was going to read this letter aloud to an audience. Irrespective of how the date is written on the letter, I might say any of the following:
- This letter is dated September 13th, two-thousand twelve
- This letter is dated 13 September, two-thousand twelve
- This letter is dated the 13th of September of this year (assuming it's still 2012)
This all varies according to the speaker, of course – some speakers might say the date a little differently. What's worth noting, however, is that, if I was doing the narration, I would almost assuredly NOT say any of these:
- This letter is dated September thirteen comma, two thousand twelve
- This letter is dated thirteen Sep twelve
- This letter is dated nine dash thirteen dash twenty twelve
- This letter is dated nine slash thirteen slash twelve
- This letter is dated thirteen Roman twelve dash twenty twelve
Pretty much the only time I can imagine myself speaking a date in that fashion is if someone asked me a question such as:
- How would you like me to write that date down? or,
- How did the author write that date on the letter?
In that case, I might say something like "nine dash thirteen dash twenty twelve" – but that is a rare exception.