http://wiki.xkcd.com/geohashing/Main_Page XKCD comic #426 contains an algorithm that generates random coordinates across the graticule every day. http://carabiner.peeron.com/xkcd/map/map.html?date=2024-11-21&lat=46&long=14&zoom=8&abs=-1 Latitude: 46.79263561164614 <br />Longitude: 14.42383966804242 46.79263561164614 14.42383966804242 Thu, Nov 21 2024 15:30:00 +0100 caea2addaa465f1a6c80c1a8fd5beec1 http://carabiner.peeron.com/xkcd/map/map.html?date=2024-11-20&lat=46&long=14&zoom=8&abs=-1 Latitude: 46.87787111154784 <br />Longitude: 14.66313356623977 46.87787111154784 14.66313356623977 Wed, Nov 20 2024 15:30:00 +0100 e0bc2942337e9763a9c31f13e131b409 http://carabiner.peeron.com/xkcd/map/map.html?date=2024-11-19&lat=46&long=14&zoom=8&abs=-1 Latitude: 46.84248101068207 <br />Longitude: 14.7314513099289 46.84248101068207 14.7314513099289 Tue, Nov 19 2024 15:30:00 +0100 d7acd5e4616959b2bb40649ec2d12235 http://carabiner.peeron.com/xkcd/map/map.html?date=2024-11-18&lat=46&long=14&zoom=8&abs=-1 Latitude: 46.073896451965376 <br />Longitude: 14.65070265985027 46.073896451965376 14.65070265985027 Mon, Nov 18 2024 15:30:00 +0100 12eae0bc7b5268a0a69473137a236989