<p>The <b>ISOWEEKNUM</b> function is one of the date and time functions. It used to return number of the ISO week number of the year for a given date. Returns a number between 1 and 54.</p>
<pstyle="text-indent: 50px;"><b><em>date</em></b> is a date you want to find the ISO week number of. Can be a reference to a cell containing a date or a date returned by the <ahref="Date.htm"onclick="onhyperlinkclick(this)">Date</a> function or other date and time function.</p>
<p>To apply the <b>ISOWEEKNUM</b> function,</p>
<ol>
<li>select the cell where you wish to display the result,</li>