Modifying an existing format / Adding a format for all Locales

[Jouroumy]

Hi,
I actually tried to get dates with this format (04.05 -> 5 april ) but it returns that as an hour
I tried to do Sugar.Date.getLocale('en').addFormat('{month}\.{day}') and also tried without the backslash

And I have another questions, I am actually working with multiples languages and I wanted to know if there is a way to add new format for multiple languages
I tried this, but it doesn't work Sugar.Date.getAllLocales().addFormat({month}-{day})

Thanks for your answer