diff --git a/SpreadsheetReader_XLSX.php b/SpreadsheetReader_XLSX.php
index 9cf8d12..5c9854d 100644
--- a/SpreadsheetReader_XLSX.php
+++ b/SpreadsheetReader_XLSX.php
@@ -24,7 +24,8 @@ class SpreadsheetReader_XLSX implements Iterator, Countable
 
 		private $Options = array(
 			'TempDir' => '',
-			'ReturnDateTimeObjects' => false
+			'ReturnDateTimeObjects' => false,
+			'ForceDateFormat' => 'Y-m-d H:i:s'
 		);
 
 		private static $RuntimeInfo = array(
@@ -831,7 +832,11 @@ private function FormatValue($Value, $Index)
 
 					if (!$this -> Options['ReturnDateTimeObjects'])
 					{
-						$Value = $Value -> format($Format['Code']);
+						if ($this->Options['ForceDateFormat']) {
+							$Value = $Value->format($this->Options['ForceDateFormat']);
+						} else {
+							$Value = $Value->format($Format['Code']);
+						}
 					}
 					else
 					{
diff --git a/composer.json b/composer.json
index 0e64a78..da2d186 100644
--- a/composer.json
+++ b/composer.json
@@ -1,10 +1,10 @@
 {
-	"name": "nuovo/spreadsheet-reader",
+	"name": "virtua-network/spreadsheet-reader",
 	"description": "Spreadsheet reader library for Excel, OpenOffice and structured text files",
 	"keywords": ["spreadsheet", "xls", "xlsx", "ods", "csv", "excel", "openoffice"],
 	"homepage": "https://github.com/nuovo/spreadsheet-reader",
-	"version": "0.5.11",
-	"time": "2015-04-30",
+	"version": "1.0",
+	"time": "2016-09-07",
 	"type": "library",
 	"license": ["MIT"],
 	"authors": [