nly specified use of this slot is for distinguishing Temporal.PlainDate instances from other objects.
          </td>
        </tr>
        <tr>
          <td>
            [[ISODate]]
          </td>
          <td>
            An ISO Date Record.
          </td>
        </tr>
        <tr>
          <td>
            [[Calendar]]
          </td>
          <td>
            A calendar type.
          </td>
        </tr>
      </table>
    </emu-table>
  </emu-clause>

  <emu-clause id="sec-temporal-plaindate-ab