--- /dev/null
+ module ietf-yang-types {
+
+ namespace "urn:ietf:params:xml:ns:yang:ietf-yang-types";
+ prefix "yang";
+
+ revision 2010-09-24;
+
+ typedef date-and-time {
+ type string {
+ pattern '\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(\.\d+)?'
+ + '(Z|[\+\-]\d{2}:\d{2})';
+ }
+ }
+}