 Perform ? RequireInternalSlot(_plainDate_, [[InitializedTemporalDate]]).
        1. Return ùîΩ(CalendarISOToDate(_plainDate_.[[Calendar]], _plainDate_.[[ISODate]]).[[Month]]).
      </emu-alg>
    </emu-clause>

    <emu-clause id="sec-get-temporal.plaindate.prototype.monthcode">
      <h1>get Temporal.PlainDate.prototype.monthCode</h1>
      <p>
        `Temporal.PlainDate.prototype.monthCode` is an accessor property whose set accessor function is *undefined*.
        Its get accessor function perfo