Please check this blog for documentation this link
Here is how it looks
Breaking change in version 1.0.8
Due to issue in date formate
dd-MM-yyyy, we have used momentjs to solve it.
We are moving away from angular DatePipe so now only momentjs date formates are valid.
so people who are using
dd will require change it to
rajeshwar patlolla's Ionic1 Datepicker