toolbar>
      </ion-header>
      <ion-content>
        <div class="grid">
          <div class="grid-item">
            <h2>One Date</h2>

            <ion-item>
              <ion-label>Start Date</ion-label>
              <ion-datetime-button slot="end" datetime="default-datetime"></ion-datetime-button>
            </ion-item>

            <ion-popover arrow="false">
              <ion-datetime
                locale="en-US"
                presentation="date"
                id="default-datetime"
     