Index: src/main/java/org/apache/tika/metadata/Metadata.java
===================================================================
--- src/main/java/org/apache/tika/metadata/Metadata.java	(revision 1231361)
+++ src/main/java/org/apache/tika/metadata/Metadata.java	(working copy)
@@ -68,6 +68,7 @@
         createDateFormat("yyyy-MM-dd' 'HH:mm:ss'Z'", "UTC"), // UTC/Zulu
         createDateFormat("yyyy-MM-dd' 'HH:mm:ssZ", null),    // With timezone
         createDateFormat("yyyy-MM-dd' 'HH:mm:ss", null),     // Without timezone
+        createDateFormat("yyyy:MM:dd", null),                // Date only, colon delimiter
     };
 
     private static DateFormat createDateFormat(String format, String timezone) {