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			<h1>WEEKNUM Function</h1>
			<p>The <b>WEEKNUM</b> function is one of the date and time functions. It used to return the number of the week the specified date falls within the year.</p>
			<p>The <b>WEEKNUM</b> function syntax is:</p> 
			<p style="text-indent: 150px;"><b><em>WEEKNUM(serial_number, [return_type])</em></b></p> 
			<p><em>where</em></p> 
			<p style="text-indent: 50px;"><b><em>serial_number</em></b> is a number representing the date within the week, entered using the <a href="Date.htm" onclick="onhyperlinkclick(this)">Date</a> function or other date and time function.</p>
			<p style="text-indent: 50px;"><b><em>return_type</em></b> is a numeric value used to determine on which day the week begins. It can be one of the following:</p>
			<table style="width: 40%">
				<tr>
					<td><b>Numeric value</b></td>
					<td><b>Week begins on</b></td>
                    <td><b>System</b></td>
				</tr>
				<tr>
					<td>1 or omitted</td>
					<td>Sunday</td>
                    <td>1</td>
				</tr>
				<tr>
					<td>2</td>
					<td>Monday</td>
                    <td>1</td>
				</tr>
                <tr>
                    <td>11</td>
                    <td>Monday</td>
                    <td>1</td>
                </tr>
                <tr>
                    <td>12</td>
                    <td>Tuesday</td>
                    <td>1</td>
                </tr>
                <tr>
                    <td>13</td>
                    <td>Wednesday</td>
                    <td>1</td>
                </tr>
                <tr>
                    <td>14</td>
                    <td>Thursday</td>
                    <td>1</td>
                </tr>
                <tr>
                    <td>15</td>
                    <td>Friday</td>
                    <td>1</td>
                </tr>
                <tr>
                    <td>16</td>
                    <td>Saturday</td>
                    <td>1</td>
                </tr>
                <tr>
                    <td>17</td>
                    <td>Sunday</td>
                    <td>1</td>
                </tr>
                <tr>
                    <td>21</td>
                    <td>Monday</td>
                    <td>2</td>
                </tr>
			</table>
            <p>When <b><em>return_type</em></b> is set to 1-17, <b>System 1</b> is used. This means that the first week in a year is the week that contains January 1.</p>
            <p>When <b><em>return_type</em></b> is set to 21, <b>System 2</b> is used. This means that the first week in a year is the week that contains the first Thursday of the year. System 2 is commonly used in Europe according to the ISO 8601 standard.</p>
			<p>To apply the <b>WEEKNUM</b> function,</p>
			<ol>
			<li>select the cell where you wish to display the result,</li>
			<li>click the <b>Insert function</b> <img alt="Insert function icon" src="../images/insertfunction.png" /> icon situated at the top toolbar,
				<br />or right-click within a selected cell and select the <b>Insert Function</b> option from the menu,
				<br />or click the <img alt="Function icon" src="../images/function.png" /> icon situated at the formula bar,
			</li>
			<li>select the <b>Date and time</b> function group from the list,</li>
			<li>click the <b>WEEKNUM</b> function,</li>
			<li>enter the required arguments separating them by commas,</li>
			<li>press the <b>Enter</b> button.</li>
			</ol>
			<p>The result will be displayed in the selected cell.</p>
			<p style="text-indent: 150px;"><img alt="WEEKNUM Function" src="../images/weeknum.png" /></p>
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 										<title>WEEKNUM Function</title>
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+											<h1>WEEKNUM Function</h1>
 											<p>The <b>WEEKNUM</b> function is one of the date and time functions. It used to return the number of the week the specified date falls within the year.</p>
 											<p>The <b>WEEKNUM</b> function syntax is:</p>
-												Update help

											
										
										
											2022-05-16 13:43:03 +00:00
+											<p style="text-indent: 150px;"><b><em>WEEKNUM(serial_number, [return_type])</em></b></p>
-												webapps added

											
										
										
											2016-03-11 00:48:53 +00:00
+											<p><em>where</em></p>
-												Update help

											
										
										
											2022-05-16 13:43:03 +00:00
+											<p style="text-indent: 50px;"><b><em>serial_number</em></b> is a number representing the date within the week, entered using the <a href="Date.htm" onclick="onhyperlinkclick(this)">Date</a> function or other date and time function.</p>
 											<p style="text-indent: 50px;"><b><em>return_type</em></b> is a numeric value used to determine on which day the week begins. It can be one of the following:</p>
-												webapps added

											
										
										
											2016-03-11 00:48:53 +00:00
+											<table style="width: 40%">
 												<tr>
 													<td><b>Numeric value</b></td>
-												Update help

											
										
										
											2022-05-16 13:43:03 +00:00
+													<td><b>Week begins on</b></td>
 								                    <td><b>System</b></td>
-												webapps added

											
										
										
											2016-03-11 00:48:53 +00:00
+												</tr>
 												<tr>
 													<td>1 or omitted</td>
-												Update help

											
										
										
											2022-05-16 13:43:03 +00:00
+													<td>Sunday</td>
 								                    <td>1</td>
-												webapps added

											
										
										
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+												</tr>
 												<tr>
 													<td>2</td>
-												Update help

											
										
										
											2022-05-16 13:43:03 +00:00
+													<td>Monday</td>
 								                    <td>1</td>
-												webapps added

											
										
										
											2016-03-11 00:48:53 +00:00
+												</tr>
-												Update help

											
										
										
											2022-05-16 13:43:03 +00:00
+								                <tr>
 								                    <td>11</td>
 								                    <td>Monday</td>
 								                    <td>1</td>
 								                </tr>
 								                <tr>
 								                    <td>12</td>
 								                    <td>Tuesday</td>
 								                    <td>1</td>
 								                </tr>
 								                <tr>
 								                    <td>13</td>
 								                    <td>Wednesday</td>
 								                    <td>1</td>
 								                </tr>
 								                <tr>
 								                    <td>14</td>
 								                    <td>Thursday</td>
 								                    <td>1</td>
 								                </tr>
 								                <tr>
 								                    <td>15</td>
 								                    <td>Friday</td>
 								                    <td>1</td>
 								                </tr>
 								                <tr>
 								                    <td>16</td>
 								                    <td>Saturday</td>
 								                    <td>1</td>
 								                </tr>
 								                <tr>
 								                    <td>17</td>
 								                    <td>Sunday</td>
 								                    <td>1</td>
 								                </tr>
 								                <tr>
 								                    <td>21</td>
 								                    <td>Monday</td>
 								                    <td>2</td>
 								                </tr>
-												webapps added

											
										
										
											2016-03-11 00:48:53 +00:00
+											</table>
-												Update help

											
										
										
											2022-05-16 13:43:03 +00:00
+								            <p>When <b><em>return_type</em></b> is set to 1-17, <b>System 1</b> is used. This means that the first week in a year is the week that contains January 1.</p>
 								            <p>When <b><em>return_type</em></b> is set to 21, <b>System 2</b> is used. This means that the first week in a year is the week that contains the first Thursday of the year. System 2 is commonly used in Europe according to the ISO 8601 standard.</p>
-												webapps added

											
										
										
											2016-03-11 00:48:53 +00:00
+											<p>To apply the <b>WEEKNUM</b> function,</p>
 											<ol>
 											<li>select the cell where you wish to display the result,</li>
-												Update helps.

											
										
										
											2017-09-20 08:31:59 +00:00
+											<li>click the <b>Insert function</b> <img alt="Insert function icon" src="../images/insertfunction.png" /> icon situated at the top toolbar,
-												webapps added

											
										
										
											2016-03-11 00:48:53 +00:00
+												<br />or right-click within a selected cell and select the <b>Insert Function</b> option from the menu,
 												<br />or click the <img alt="Function icon" src="../images/function.png" /> icon situated at the formula bar,
 											</li>
 											<li>select the <b>Date and time</b> function group from the list,</li>
 											<li>click the <b>WEEKNUM</b> function,</li>
 											<li>enter the required arguments separating them by commas,</li>
 											<li>press the <b>Enter</b> button.</li>
 											</ol>
 											<p>The result will be displayed in the selected cell.</p>
 											<p style="text-indent: 150px;"><img alt="WEEKNUM Function" src="../images/weeknum.png" /></p>
 										</div>
 									</body>
 								</html>