How to capitalize month

With the italian locale it-IT,  I use `{{formatDate date "long"}}` to print my dates.
In this way, months are printed with the first letter lowercase but I would like to have them capitalized like in the english locale en-EN (by the way, why this difference?).
So I would like to get _12 **S**ettembre 2016_ instead of _12 **s**ettembre 2016_.
Is that possible?
Thank you.
