diff --git a/language/en-GB/en-GB.mod_articles_category.ini b/language/en-GB/en-GB.mod_articles_category.ini
index bdcce35170e3d..cebfbc76f4daf 100644
--- a/language/en-GB/en-GB.mod_articles_category.ini
+++ b/language/en-GB/en-GB.mod_articles_category.ini
@@ -27,6 +27,8 @@ MOD_ARTICLES_CATEGORY_FIELD_CATFILTERINGTYPE_DESC="Select Inclusive to Include t
 MOD_ARTICLES_CATEGORY_FIELD_CATFILTERINGTYPE_LABEL="Category Filtering Type"
 MOD_ARTICLES_CATEGORY_FIELD_COUNT_DESC="The number of items to display. The default value of 0 will display all articles."
 MOD_ARTICLES_CATEGORY_FIELD_COUNT_LABEL="Count"
+MOD_ARTICLES_CATEGORY_FIELD_DATEGROUPINGFIELD_DESC="Select which date field you want the date grouping to be applied to."
+MOD_ARTICLES_CATEGORY_FIELD_DATEGROUPINGFIELD_LABEL="Date Grouping Field"
 MOD_ARTICLES_CATEGORY_FIELD_DATERANGEFIELD_DESC="Select which date field you want the date range to be applied to."
 MOD_ARTICLES_CATEGORY_FIELD_DATERANGEFIELD_LABEL="Date Range Field"
 MOD_ARTICLES_CATEGORY_FIELD_DATEFIELD_DESC="Select which date field you want to display."
@@ -97,4 +99,4 @@ MOD_ARTICLES_CATEGORY_OPTION_YEAR_VALUE="Year"
 MOD_ARTICLES_CATEGORY_READ_MORE="Read more: "
 MOD_ARTICLES_CATEGORY_READ_MORE_TITLE="Read More ..."
 MOD_ARTICLES_CATEGORY_REGISTER_TO_READ_MORE="Register to read more"
-MOD_ARTICLES_CATEGORY_XML_DESCRIPTION="This module displays a list of articles from one or more categories."
\ No newline at end of file
+MOD_ARTICLES_CATEGORY_XML_DESCRIPTION="This module displays a list of articles from one or more categories."
diff --git a/modules/mod_articles_category/helper.php b/modules/mod_articles_category/helper.php
index d046a8fb0e97e..49acbf4a496f8 100644
--- a/modules/mod_articles_category/helper.php
+++ b/modules/mod_articles_category/helper.php
@@ -437,12 +437,13 @@ public static function groupBy($list, $fieldName, $article_grouping_direction, $
 	 * @param   string  $type                        type of grouping
 	 * @param   string  $article_grouping_direction  ordering direction
 	 * @param   string  $month_year_format           date format to use
+	 * @param   string  $dateField                   date field to group by
 	 *
 	 * @return  array
 	 *
 	 * @since   1.6
 	 */
-	public static function groupByDate($list, $type = 'year', $article_grouping_direction, $month_year_format = 'F Y')
+	public static function groupByDate($list, $type = 'year', $article_grouping_direction, $month_year_format = 'F Y', $dateField = 'created')
 	{
 		$grouped = array();
 
@@ -461,7 +462,7 @@ public static function groupByDate($list, $type = 'year', $article_grouping_dire
 			switch ($type)
 			{
 				case 'month_year' :
-					$month_year = StringHelper::substr($item->created, 0, 7);
+					$month_year = StringHelper::substr($item->$dateField, 0, 7);
 
 					if (!isset($grouped[$month_year]))
 					{
@@ -473,7 +474,7 @@ public static function groupByDate($list, $type = 'year', $article_grouping_dire
 
 				case 'year' :
 				default:
-					$year = StringHelper::substr($item->created, 0, 4);
+					$year = StringHelper::substr($item->$dateField, 0, 4);
 
 					if (!isset($grouped[$year]))
 					{
diff --git a/modules/mod_articles_category/mod_articles_category.php b/modules/mod_articles_category/mod_articles_category.php
index ed1d05a6c0780..9687271cc09ef 100644
--- a/modules/mod_articles_category/mod_articles_category.php
+++ b/modules/mod_articles_category/mod_articles_category.php
@@ -76,7 +76,13 @@
 		{
 			case 'year' :
 			case 'month_year' :
-				$list = ModArticlesCategoryHelper::groupByDate($list, $article_grouping, $article_grouping_direction, $params->get('month_year_format', 'F Y'));
+				$list = ModArticlesCategoryHelper::groupByDate(
+							$list,
+							$article_grouping,
+							$article_grouping_direction,
+							$params->get('month_year_format', 'F Y'),
+							$params->get('date_grouping_field', 'created')
+						);
 				break;
 			case 'author' :
 			case 'category_title' :
diff --git a/modules/mod_articles_category/mod_articles_category.xml b/modules/mod_articles_category/mod_articles_category.xml
index b165a209000ff..afe6a5d230d81 100644
--- a/modules/mod_articles_category/mod_articles_category.xml
+++ b/modules/mod_articles_category/mod_articles_category.xml
@@ -348,6 +348,28 @@
 					<option value="category_title">JCATEGORY</option>
 				</field>
 
+				<field
+					name="month_year_format"
+					type="text"
+					label="MOD_ARTICLES_CATEGORY_FIELD_MONTHYEARFORMAT_LABEL"
+					description="MOD_ARTICLES_CATEGORY_FIELD_MONTHYEARFORMAT_DESC"
+					default="F Y"
+					showon="article_grouping:year,month_year"
+				/>
+
+				<field
+					name="date_grouping_field"
+					type="list"
+					label="MOD_ARTICLES_CATEGORY_FIELD_DATEGROUPINGFIELD_LABEL"
+					description="MOD_ARTICLES_CATEGORY_FIELD_DATEGROUPINGFIELD_DESC"
+					default="created"
+					showon="article_grouping:year,month_year"
+					>
+					<option value="created">MOD_ARTICLES_CATEGORY_OPTION_CREATED_VALUE</option>
+					<option value="modified">MOD_ARTICLES_CATEGORY_OPTION_MODIFIED_VALUE</option>
+					<option value="publish_up">MOD_ARTICLES_CATEGORY_OPTION_STARTPUBLISHING_VALUE</option>
+				</field>
+
 				<field
 					name="article_grouping_direction"
 					type="list"
@@ -359,13 +381,6 @@
 					<option value="ksort">MOD_ARTICLES_CATEGORY_OPTION_ASCENDING_VALUE</option>
 				</field>
 
-				<field
-					name="month_year_format"
-					type="text"
-					label="MOD_ARTICLES_CATEGORY_FIELD_MONTHYEARFORMAT_LABEL"
-					description="MOD_ARTICLES_CATEGORY_FIELD_MONTHYEARFORMAT_DESC"
-					default="F Y"
-				/>
 			</fieldset>
 
 			<fieldset