I still don't see any change in date picker after applying these fileds below is the way I implemented.
<ngxsmk-datepicker [(ngModel)]="postingTime" [disabled]="disableDate()" [yearRange]="50" [autoApplyClose]="false" [timeOnly]="true" [showTime]="true"
[inline]="false" [locale]="'en-US'" placeholder="Select Date" [mode]="'single'" name="bondTime">