diff --git a/modules/default/clock/README.md b/modules/default/clock/README.md
index ab65d3f4..522b1ad2 100644
--- a/modules/default/clock/README.md
+++ b/modules/default/clock/README.md
@@ -45,5 +45,19 @@ The following properties can be configured:
 				<br><b>Default value:</b> <code>true</code>
 			</td>
 		</tr>
+		<tr>
+			<td><code>showPeriod</code></td>
+			<td>Show the period (am/pm) with 12 hour format<br>
+				<br><b>Possible values:</b> <code>true</code> or <code>false</code>
+				<br><b>Default value:</b> <code>true</code>
+			</td>
+		</tr>
+		<tr>
+			<td><code>showPeriodUpper</code></td>
+			<td>Show the period (AM/PM) with 12 hour format as uppercase<br>
+				<br><b>Possible values:</b> <code>true</code> or <code>false</code>
+				<br><b>Default value:</b> <code>false</code>
+			</td>
+		</tr>
 	</tbody>
 </table>