man: mention that /var/lib/systemd/timesync/clock might have the compilation timestamp

https://bugs.freedesktop.org/show_bug.cgi?id=90085

diff --git a/man/systemd-timesyncd.service.xml b/man/systemd-timesyncd.service.xml
index b5eb8a4ac2420b79bf9e5821c9a6abcfe9578d29..4c1580e7271b56e506c6471eb263524532e39cff 100644 (file)
--- a/man/systemd-timesyncd.service.xml
+++ b/man/systemd-timesyncd.service.xml
@@ -85,7 +85,8 @@
 
         <listitem>
           <para>The modification time of this file indicates the timestamp of the last successful
-          synchronization.</para>
+          synchronization (or at least the systemd build date, in case synchronization was not
+          possible).</para>
         </listitem>
       </varlistentry>