diff --git a/doc/bird.sgml b/doc/bird.sgml
index d0bfabdb..87317e04 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -957,7 +957,7 @@ agreement").
 
 	<tag><label id="proto-pass-gen-from">generate from "<m/time/"</tag>
 	The start time of the usage of the password for packet signing.
-	The format of <cf><m/time/</cf> is <tt>dd-mm-yyyy HH:MM:SS</tt>.
+	The format of <cf><m/time/</cf> is <tt>YYYY-MM-DD [hh:mm:ss[.sss]]</tt>.
 
 	<tag><label id="proto-pass-gen-to">generate to "<m/time/"</tag>
 	The last time of the usage of the password for packet signing.
@@ -4811,14 +4811,14 @@ protocol ospf MyOSPF {
 			authentication cryptographic;
 			password "abc" {
 				id 1;
-				generate to "22-04-2003 11:00:06";
-				accept from "17-01-2001 12:01:05";
+				generate to "2023-04-22 11:00:06";
+				accept from "2021-01-17 12:01:05";
 				algorithm hmac sha384;
 			};
 			password "def" {
 				id 2;
-				generate to "22-07-2005 17:03:21";
-				accept from "22-02-2001 11:34:06";
+				generate to "2025-07-22";
+				accept from "2021-02-22";
 				algorithm hmac sha512;
 			};
 		};