Setting angular material date picker value programmatically

I am using angular material date picker in one of my component’s of angular project. This component has two tabs. Using *ngIf I am showing only one at a time based on what user has clicked.In one tab user selects a date and if navigate away to other tab of same component and comes back to previous one, I need to retain the selected date.

This is what I am doing in HTML side:

<mat-form-field class="dropdownWidth">
      <input #dateInput matInput [matDatepickerFilter]="myFilter" [matDatepicker]="picker"
             placeholder="Choose a date"
             [value]="datePickerDate"
             [(ngModel)]="datePickerDate"
             (dateChange)="addDateEvent($event)"
             [disabled]="selectedOperator.length === 0 && userDateRange.length === 0">
      <mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
      <mat-datepicker #picker></mat-datepicker>
</mat-form-field>

And in TS file:

addDateEvent(event) {
   this.datePickerEvent = event;
   this.datePickerDate = new Date(`${event.value['_i'].month + 1}-${event.value['_i'].date}-${event.value['_i'].year}`);
   this.formatDate = moment(event.value).format('YYYY-MM-DD');
}

But when I navigate back, date value is not retained. Any suggestions how can I achieve this?

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