What is the general goal of the feature?
In Myanmar that's the calendar used.
As ODK already support specific calendars (Ethiopian, Nepalese) would be fair to accomodate also this one.
What are some example use cases for this feature?
For the users there would be really useful, as the local people interviewed normally knows dates on that calendar and it is a problem for the interviewer to collect that info as they would need to convert somehow the information they get into a gregorian date.
This makes it complicated and sometime they don't record the precise information.
What can you contribute to making this feature a reality?
Info and testing