any time-zone-dependent <literal>%</literal>-escapes, the computation

is done in the zone specified

by <xref linkend="guc-log-timezone">.)

The supported <literal>%</literal>-escapes are similar to those

listed in the Open Group's <ulink

url="http://pubs.opengroup.org/onlinepubs/009695399/functions/strftime.html">strftime

</ulink> specification.

Note that the system's <systemitem>strftime</systemitem> is not used

directly, so platform-specific (nonstandard) extensions do not work.

</para>