days, months, and years, which may vary in length over time.
</p>
<p>See <a class="xref" href="calendarDuration.html">calendarDuration</a>.
</p></dd>
<dt>iscalendarduration</dt>
<dd><p>True if input is a ‘calendarDuration’ array, false otherwise.
</p>
<p>See <a class="xref" href="iscalendarduration.html">iscalendarduration</a>.
</p></dd>
<dt>calmonths</dt>
<dd><p>Create a ‘calendarDuration’ that is a given number of calendar months long.
</p>
<p>See <a class="xref" href="calmonths.html">calmonths</a