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=2026-08-18&lat=46&long=14&zoom=8&abs=-1 Latitude: 46.68395645679666 <br />Longitude: 14.75462420945239 46.68395645679666 14.75462420945239 Tue, Aug 18 2026 15:30:00 +0100 af17c535d4659ec0c12f0d5c5e2de5e4 http://carabiner.peeron.com/xkcd/map/map.html?date=2026-08-17&lat=46&long=14&zoom=8&abs=-1 Latitude: 46.93294465121147 <br />Longitude: 14.72882616745532 46.93294465121147 14.72882616745532 Mon, Aug 17 2026 15:30:00 +0100 eed575edee7102beba945a09b08c3c67 http://carabiner.peeron.com/xkcd/map/map.html?date=2026-08-16&lat=46&long=14&zoom=8&abs=-1 Latitude: 46.7283139012163 <br />Longitude: 14.36071135756675 46.7283139012163 14.36071135756675 Sun, Aug 16 2026 15:30:00 +0100 ba72c7a2f23912265c57945c0b824963 http://carabiner.peeron.com/xkcd/map/map.html?date=2026-08-15&lat=46&long=14&zoom=8&abs=-1 Latitude: 46.41362239862338 <br />Longitude: 14.51316872738975 46.41362239862338 14.51316872738975 Sat, Aug 15 2026 15:30:00 +0100 69e32852fb016397835f0695780b228b