Change default date time picker

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1

Hello

how can we change default date-time picker in frappe. any help is appriciated.

Thanks,
Hardik

2

https://github.com/frappe/frappe/blob/develop/frappe/public/js/frappe/form/control.js#L687

3

Hi
how can we replace default date-time picker in frappe and use hijri or jalali datepicker instead it?
Which files and codes should be change?
Also which files and codes should be changed to implement hijri/jalali calendar in calendar/slickgrid/reports?