It is possible to set an absolute shutdown time which is earlier than the current time. If this is the case, proftpd will not shutdown until the indicated time on the following day.
ProFTPD is written and maintained by a number of people, full credits can be found on http://www.proftpd.org/credits.html
Full documentation on ProFTPD, including configuration and FAQs, is available at http://www.proftpd.org/
Report bugs at http://bugs.proftpd.org/ For help/support, try the ProFTPD mailing lists, detailed on http://www.proftpd.org/lists.html