diff --git a/functions/datetime.xml b/functions/datetime.xml
index 6c844e22d8..1d5fb2038a 100644
--- a/functions/datetime.xml
+++ b/functions/datetime.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.60 $ -->
+<!-- $Revision: 1.61 $ -->
  <reference id="ref.datetime">
   <title>Date and Time functions</title>
   <titleabbrev>Date/time</titleabbrev>
@@ -906,6 +906,19 @@ echo strftime ("Last day in Feb 2000 is: %d", $lastday);
         preceded by a space (range ' 1' to '31')
        </simpara>
       </listitem>
+      <listitem>
+       <simpara>
+        %g - like %G, but without the century.
+       </simpara>
+      </listitem>
+      <listitem>
+       <simpara>
+        %G - The 4-digit year corresponding to the ISO week number (see %V).
+        This has the same format and value as %Y, except that if the ISO week
+        number belongs to the previous or next year, that year is used
+        instead.
+       </simpara>
+      </listitem>
       <listitem>
        <simpara>
         %h - same as %b
@@ -999,7 +1012,9 @@ echo strftime ("Last day in Feb 2000 is: %d", $lastday);
         %V - The  ISO 8601:1988 week number of the current year as a
         decimal number, range 01 to 53, where week 1 is the first
         week that has at least 4 days in the current year, and with
-        Monday as the first day of the week.
+        Monday as the first day of the week. (Use %G or %g for the year
+        component that corresponds to the week number for the specified
+        timestamp.)
        </simpara>
       </listitem>
       <listitem>