diff --git a/core/modules/filters/sameday.js b/core/modules/filters/sameday.js
index 1a4571b02..478f56c90 100644
--- a/core/modules/filters/sameday.js
+++ b/core/modules/filters/sameday.js
@@ -17,14 +17,15 @@ Export our filter function
 */
 exports.sameday = function(source,operator,options) {
 	var results = [],
+		fieldName = operator.suffix || "modified",
 		targetDate = (new Date($tw.utils.parseDate(operator.operand))).setHours(0,0,0,0);
 	// Function to convert a date/time to a date integer
 	var isSameDay = function(dateField) {
 			return (new Date(dateField)).setHours(0,0,0,0) === targetDate;
 		};
 	source(function(tiddler,title) {
-		if(tiddler && tiddler.fields.modified) {
-			if(isSameDay(tiddler.fields.modified)) {
+		if(tiddler && tiddler.fields[fieldName]) {
+			if(isSameDay(tiddler.fields[fieldName])) {
 				results.push(title);
 			}
 		}
diff --git a/editions/tw5.com/tiddlers/filters/FilterOperator sameday.tid b/editions/tw5.com/tiddlers/filters/FilterOperator sameday.tid
index b4f9a60f1..ba9249795 100644
--- a/editions/tw5.com/tiddlers/filters/FilterOperator sameday.tid	
+++ b/editions/tw5.com/tiddlers/filters/FilterOperator sameday.tid	
@@ -4,11 +4,12 @@ tags: filters
 title: FilterOperator: sameday
 type: text/vnd.tiddlywiki
 
-The ''sameday'' filter operator filters the current list to leave only those tiddlers whose `modified` field is on the same day as the date provided as the operand.
+The ''sameday'' filter operator filters the current list to leave only those tiddlers whose `modified` field is on the same day as the date provided as the operand. The optional suffix allows a different field to be specified.
 
 For example:
 
 |!Filter String |!Description |
 |`[sameday[20140410]]` |Returns a list of the tiddlers modified on the 10th April 2014 |
+|`[sameday:created[20140410]]` |Returns a list of the tiddlers created on the 10th April 2014 |
 
 See [[FilterOperator: eachday]] for an example.