change the Gregorian calendar to other calendars?

Hello
Is it possible to change the Gregorian calendar to other calendars in different countries such as solar calendar or lunar calendar or Chinese calendar in traccar?
I mean display all dates based on other calendars?

I don't think we support it currently.

Is it possible for me to implement this in the program source?
And if yes, what part of the traccar program is related to the calendar?
Thank you

Anything is possible to implement in the source code.