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=2025-12-26&lat=46&long=14&zoom=8&abs=-1 Latitude: 46.70165001643195 <br />Longitude: 14.15193444167521 46.70165001643195 14.15193444167521 Fri, Dec 26 2025 15:30:00 +0100 b39f55e1d02738b926e52cf2218b3b87 http://carabiner.peeron.com/xkcd/map/map.html?date=2025-12-25&lat=46&long=14&zoom=8&abs=-1 Latitude: 46.94505069236 <br />Longitude: 14.77623907705778 46.94505069236 14.77623907705778 Thu, Dec 25 2025 15:30:00 +0100 f1eed798bf93b4bbc6b79aa9d724eaee http://carabiner.peeron.com/xkcd/map/map.html?date=2025-12-24&lat=46&long=14&zoom=8&abs=-1 Latitude: 46.93356027396463 <br />Longitude: 14.63935755927097 46.93356027396463 14.63935755927097 Wed, Dec 24 2025 15:30:00 +0100 eefdce5d85dad8fca3acefdf84e9207b http://carabiner.peeron.com/xkcd/map/map.html?date=2025-12-23&lat=46&long=14&zoom=8&abs=-1 Latitude: 46.18070663426136 <br />Longitude: 14.88444884022817 46.18070663426136 14.88444884022817 Tue, Dec 23 2025 15:30:00 +0100 2e42ca3c52a1397fe26b3d3bc3ded26d