diff --git a/src/fr/devinsy/statoolinfos/checker/PropertyChecker.java b/src/fr/devinsy/statoolinfos/checker/PropertyChecker.java
index eb302af..48492eb 100644
--- a/src/fr/devinsy/statoolinfos/checker/PropertyChecker.java
+++ b/src/fr/devinsy/statoolinfos/checker/PropertyChecker.java
@@ -37,7 +37,7 @@ public class PropertyChecker
 {
     public static final String ALL = "^.*$";
     public static final String STRING = "^.+$";
-    public static final String DATETIME = "\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}(\\.\\d+)?";
+    public static final String DATETIME = "\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}(:\\d{2}([\\.,]\\d+)?)?([+-]\\d\\d:\\d\\d)?";
     public static final String DATE = "^(\\d{4}-\\d{2}-\\d{2}|\\d{2}/\\d{2}/\\d{4}|\\d{2}/\\d{4})";
     public static final String URL = "^(http(s)?://)?[\\w-_\\.]+(\\.\\w+)+(/.*)?$";
     public static final String EMAIL = "^.*@.*$";