diff --git a/tzfile.5 b/tzfile.5
index 9bd3d50..f92794e 100644
--- a/tzfile.5
+++ b/tzfile.5
@@ -133,4 +133,4 @@ in the file.
 newctime(3)
 .\" %W%
 .\" This file is in the public domain, so clarified as of
-.\" June 5, 1996 by Arthur David Olson (arthur_david_olson@nih.gov).
+.\" 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).