Softshape.com. Powerful program with many features, including wallpaper clock support. Dexclock {Windows} Dexpot If you only want wall clocks, try Dexclock.
Dexclock. 408 likes. Wallpaper Clocks for Windows ... The analog Wallpaper Clocks available for download from Vladstudio's website will not work correctly until Vlad releases ...
If that's too difficult/complicated, perhaps amend the DexClock /Wallpaper Clock plugin executable to accept a "wallpaper clock" filename ...
Dexclock, free and safe download. Dexclock latest version: Beautiful desktop wallpapers with clock functionality. Dexclock is a nice Windows app that turns your desktop wallpaper into something more than just a background