This is slightly off topic for the mailing list, but I thought some people
would find it interesting. There is a time traveller convention at MIT
next weekend. From the web page, "Technically, you would only need one
time traveler convention." Also, "We do request that you bring some sort
of proof that you do indeed come from the future, and haven't just dressed
like you do."
The Time Traveler Convention May 7, 2005, 10:00pm EDT (08 May 2005 02:00:00 UTC) East Campus Courtyard, MIT 42:21:36.025°N, 71:05:16.332°W (42.360007,-071.087870 in decimal degrees)