xkcd Geohashing 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=2024-12-23&lat=46&long=14&zoom=8&abs=-1 2024-12-23: 46.422096 14.987646 Latitude: 46.42209619213308 <br />Longitude: 14.98764595210186 46.42209619213308 14.98764595210186 Mon, Dec 23 2024 15:30:00 +0100 6c0e7efcfa4b2a8dfcd65d784de49f17 http://carabiner.peeron.com/xkcd/map/map.html?date=2024-12-22&lat=46&long=14&zoom=8&abs=-1 2024-12-22: 46.162533 14.230046 Latitude: 46.16253260606971 <br />Longitude: 14.23004574651342 46.16253260606971 14.23004574651342 Sun, Dec 22 2024 15:30:00 +0100 299bbca39a60ccf63ae4472ddbe9d147 http://carabiner.peeron.com/xkcd/map/map.html?date=2024-12-21&lat=46&long=14&zoom=8&abs=-1 2024-12-21: 46.678945 14.13954 Latitude: 46.67894519903092 <br />Longitude: 14.13954033421222 46.67894519903092 14.13954033421222 Sat, Dec 21 2024 15:30:00 +0100 adcf5a419d2fbe8123b8ea53ea1462dc http://carabiner.peeron.com/xkcd/map/map.html?date=2024-12-20&lat=46&long=14&zoom=8&abs=-1 2024-12-20: 46.380378 14.025356 Latitude: 46.38037763551916 <br />Longitude: 14.025356479014919 46.38037763551916 14.025356479014919 Fri, Dec 20 2024 15:30:00 +0100 61606dc0af40e0f6067dc3201c5c8659