https://stackblitz.com/edit/ng-mat-date-value-binding-kk-12?embed=1&file=app/datepicker-value-example.html&view=preview < mat-form-field > < input matInput [ matDatepicker ] = "picker3" placeholder = "Value binding" [ value ] = "startDate.value" > < mat-datepicker-toggle matSuffix [ for ] = "picker3" ></ mat-datepicker-toggle > < mat-datepicker # picker3 ></ mat-datepicker > </ mat-form-field > < mat-form-field > < input matInput [ matDatepicker ] = "picker4" placeholder = "Value binding" [ value ] = "endDate.value" > < mat-datepicker-toggle matSuffix [ for ] = "picker4" ></ mat-datepicker-toggle > < mat-datepicker # picker4 ></ mat-datepicker > </ mat-form-field > import { Component } from "@angular/core" ; import { FormControl } from "@angular