Display of timestamp in pg_dump custom format

The table of contents for pg_restore -l shows the time the archive was
made as local time (it uses ctime()):
; Archive created at Wed Apr 30 10:03:28 2014

Is this clear enough that it is local time?  Should we display this
better, perhaps with a time zone designation?

--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://enterprisedb.com
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