Angular Material Datepicker: Change event not firing when selecting date

Question

I'm using Angular and Angular Material's Datepicker. Everything is working fine for the most part, however I added a (change) event that is only working when the user manually types in a date. It does not get triggered when the user clicks on a date from the datepicker popup. To be clear, the value for date does in fact change when the user clicks on a date, it is just the (change) event, and ultimately my updateCalcs() function that for some reason doesn't get triggered. How can I trigger an event when the user clicks on a date from the datepicker?

<md-input-container>
    <input mdInput [mdDatepicker]="datePicker" placeholder="Choose Date" name="date" [(ngModel)]="date" (change)="updateCalcs()" required>
    <button mdSuffix [mdDatepickerToggle]="datePicker"></button>
</md-input-container>
<md-datepicker #datePicker></md-datepicker>

Answer 1

There's a dateChange event that's raised both when the date is edited in the text box and when the date is changed via the calendar control. See here

<mat-form-field>
  <input matInput [matDatepicker]="datepicker" required placeholder="Choose a date" (dateChange)="valueChanged()">
  <mat-datepicker-toggle matSuffix [for]="datepicker"></mat-datepicker-toggle>
  <mat-datepicker #datepicker></mat-datepicker>
</mat-form-field>

Answer 2

Replace change with ngModelChange

Change from

<input mdInput 
       [mdDatepicker]="datePicker" 
       placeholder="Choose Date" 
       name="date" [(ngModel)]="date" 
       (change)="updateCalcs()" required>

To

<input mdInput 
       [mdDatepicker]="datePicker" 
       placeholder="Choose Date" 
       name="date" [(ngModel)]="date" 
       (ngModelChange)="updateCalcs()" required>