Is it possible to customize standard ionic 2 datepicker to display day also, meaning when user selects date, month , year, it would be nice to see what day they are choosing.
Reference: http://blog.ionic.io/ionic-2-fixing-date-inputs-for-the-mobile-web/
I don't understand exactly your question, but you can display more than 3 elements in a Ionic DateTime. This is just as easy as modify the pickerFormat component parameter. For example this code shows four elements to pick: hours, days, months and year.
<ion-datetime
pickerFormat="mm DD MMM YYYY"
...
>
</ion-datetime>
In the following link you will see all possible formats an options to set into the pickerFormat Input.
I hope this can help.