There used to be a Palm OS app called CityTime that combined world clocks and twilight/night areas on a 2D map: https://palmdb.net/app/citytime https://palmdb.n

There used to be a Palm OS app called CityTime that combined world clocks and twilight/night areas on a 2D map: https://palmdb.net/app/citytime https://palmdb.net/app/citytime This is a webpage that has a clean map visualization: https://www.timeanddate.com/worldclock/sunearth.html https://www.timeanddate.com/worldclock/sunearth.html Here is another: https://in-the-sky.org//twilightmap.php https://in-the-sky.org//twilightmap.php EDIT: Vibe-coded another: http://nixon-development.com/worldclock http://nixon-development.com/worldclock