A Jalaali (Jalali, Persian, Khorshidi, Shamsi) calendar system

Using my Dolibarr Other native modules
1

Hi Developers,
Would you please add Jalali, Persian Date into Dolibarr Core?
For better understanding, you can refer to the below site

https://fullcalendar.io/
–> DEMO section
—> Locales -->fa

Kind regards
Davoud

2

Dear Davoud,
How did you implement new calendar (Jalali) in Dolibarr?