Damian Haller

Damian Haller

Building the germanic lunisolar calendar
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About

From 2017 to 2021, I designed, printed, and sold the reconstructed Germanic lunisolar calendar as an annual A3 wall calendar. Sales grew steadily, and partnerships with several shops developed. The last edition covered the year 12021 (in the H.E. after Cesare Emiliani). From 2019 onward, the wall calendar was published with its own ISBN through Edition Roter Drache. Even during the print phase, the idea of offering Ártala as an app took shape. In 2026, Ártala finally became an app: as a web application and as a native Android app on Google Play.. The iOS app has been available on the App Store since July 2026.

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Maker History

  • Ártala – Jahrzähler
    Ártala – JahrzählerThe Germanic lunisolar calendar: source-based, as an app.
    Jul 2026
    • 🎉
    Joined Product HuntJuly 5th, 2026

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2mo ago

Ártala – Jahrzähler - The Germanic lunisolar calendar: source-based, as an app.

Ártala makes the reconstructed Germanic lunisolar calendar usable again: it calculates moon phases, months, leap months and festivals of the "bound" lunar calendar - source-based, ad-free, computed offline. Available as a web app, on Android and iOS.
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