--- a/src/pyams_utils/date.py	Fri Dec 28 10:54:20 2018 +0100
+++ b/src/pyams_utils/date.py	Mon Jan 07 11:34:52 2019 +0100
@@ -267,6 +267,6 @@
             format_func = datetime.timestamp
         dc = IZopeDublinCore(context, None)
         if dc is None:
-            return format_func(datetime.utcnow())
+            return format_func(tztime(datetime.utcnow()))
         else:
-            return format_func(dc.modified)
+            return format_func(tztime(dc.modified))