Formatting default date format from mm/dd/yyyy to dd/mm/yyyy

I’m using the code
< ion-item class=“listItem item-input” id=“dateSight”>
< span class=“input-label” >Date Sighted
< input type=“date” ng-model=“”>
< /ion-item>

it showing date as mm/dd/yyyy format… how to convert it to dd/mm/yyyy… I tried many things but none are working…
In the controller i’m getting dd/mm/yyyy format when i used filter, but when i’m trying to display it is displaying as mm/dd/yyyy… (Don’t only read the first, accepted answer. Look at the others, they could help you.)