teger, or a sequence of integers, meaning the week numbers valid in the recurrence.
Week numbers have the meaning described in ISO8601, that is, the first week of the year is that containing at least
four days of the new year.
</p></div></div>
    </li><li name="org.saddle.time.RRule#byYearDay" visbl="pub" data-isabs="false" fullComment="no" group="Ungrouped">
      <a id="byYearDay(d:Int*):org.saddle.time.RRule"></a>
      <a id="byYearDay(Int*):RRule"></a>
      <h4 class="signature">
      <span class="m