diff --git a/core/model/fieldtypes/Datetime.php b/core/model/fieldtypes/Datetime.php
index 7b677948c..dd3f97db5 100644
--- a/core/model/fieldtypes/Datetime.php
+++ b/core/model/fieldtypes/Datetime.php
@@ -24,6 +24,10 @@ if(!class_exists('Datetime')) {
 			return date('H:i', strtotime($this->value));
 		}
 	
+		function URLDatetime() {
+			return date('Y-m-d%20H:i:s', strtotime($this->value));
+		}
+		
 		function requireField() {
 			DB::requireField($this->tableName, $this->name, "datetime");
 		}
diff --git a/core/model/fieldtypes/SSDatetime.php b/core/model/fieldtypes/SSDatetime.php
index 0bc6529d6..05e87827e 100644
--- a/core/model/fieldtypes/SSDatetime.php
+++ b/core/model/fieldtypes/SSDatetime.php
@@ -25,6 +25,10 @@ class SSDatetime extends Date {
 		DB::requireField($this->tableName, $this->name, "datetime");
 	}
 	
+	function URLDatetime() {
+		return date('Y-m-d%20H:i:s', strtotime($this->value));
+	}
+	
 	function __construct( $name ) {
 		// Debug::show( 'Created SSDatetime: ' . $name );
 		parent::__construct( $name );