This tool uses python's calendar library (which provides modular ncal functionality) to generate a TeX based, A4-sized wall calendar with one month per page.
See also https://github.com/DavidGriffith/panda-display for a version of Spare Time Gizmos' Panda display for pdp-10 simulators with USB interface, which I first saw on Lars Brinkoff's video https://m.youtube.com/watch?v=q11mOtTs2Zo