Please consider this a formal announcement that the public meeting with existing bidders will be held on September 23, at 1500UTC, which is:
8:00AM in San Francisco 11:00AM in New York 16:00 in London 23:00 in Taipei midnight in Tokyo (next day) and 01:00AM in Sydney.
The meeting will take place on IRC, on freenode, on channel #wikimania2008. For instructions on how to obtain an IRC client or how to connect to the wikipedia IRC channels, see http://en.wikipedia.org/wiki/Wikipedia:IRC_channels.