<div class="form-outline" data-mdb-datepicker-init data-mdb-input-init data-mdb-format="dd-mm-yyyy">

  <input type="text" class="form-control" id="exampleDatepicker4" placeholder="dd, mmm, yyyy" />

  <label for="exampleDatepicker4" class="form-label">Select a date</label>

</div>