Town based holidays

[delassiter]

I'm sorry to open up a whole new can of worms, but looking at the Bavarian holidays (DE-BY) i noticed two issues:

1. Mariä Himmelfahrt (Assumption of Mary) is always added as August 15th. This is an issue because based on Bavarian law it is only a public holiday in towns with a catholic majority. Currently out of 2056 towns and cities, it is not a holiday in 348, including some major places like Nuremberg, Fürth, Erlangen and Bayreuth.
2. The city of Augsburg with a population of over 300,000 has its own public holiday "Friedensfest" on August 8th.

Sources:

• https://www.stmi.bayern.de/staat-und-verfassung/feiertage/
• https://www.statistik.bayern.de/statistik/gebiet_bevoelkerung/zensus/himmelfahrt/index.php
• https://www.statistik.bayern.de/mam/statistik/gebiet_bevoelkerung/zensus/a_44_mariae_himmelfahrt_2025.pdf (Visual Map)

The historic aspect is also interessting:

If a town has Mariä Himmelfahrt is subject to change and I don't know of any resource with historic data. Also towns may have become incorporated into other towns or cities. I'm pretty much ruling out ever having any accuracy on historic data.

Friedensfest in Augsburg on the other hand has been a public holiday before 1934 and after 1950.

I think this whole topic has similarities with #104, but rather than being based on personal religious/ethnic affiliation, where you could ask the user, this is more or less a regional thing. Though using town names to further distinguish the "region" seems like a pretty bad idea.

Given the amount of people being affected by wrong or missing public holidays, it should be somehow reflected in this package. Given the complexity I can totaly understand if it won't.

Does anyone see any practical way of implementing such a feature?

[arnebr]

Good point! Need to be a maintainers decision.

There are additional sub-regional exceptions for Fronleichnam (Corpus Christi) that go beyond the state level and may be relevant for accurate holiday calculation:

Sachsen

Fronleichnam is only a public holiday in specific Catholic-influenced municipalities of the Sorbian settlement area in the Landkreis Bautzen:

• Bautzen (only districts Bolbritz and Salzenforst)
• Crostwitz
• Göda (only district Prischwitz)
• Großdubrau (only district Sdier)
• Hoyerswerda (only district Dörgenhausen)
• Königswartha (except district Wartha)
• Nebelschütz
• Neschwitz (only districts Neschwitz and Saritsch)
• Panschwitz-Kuckau
• Puschwitz
• Räckelwitz
• Radibor
• Ralbitz-Rosenthal
• Wittichenau

⚠️ Decisive is the place of work, not the employee’s place of residence.

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Thüringen

Fronleichnam is only a public holiday in:

• Landkreis Eichsfeld, and

• Selected municipalities in Unstrut-Hainich-Kreis and Wartburgkreis:

  • Anrode (districts Bickenriede, Zella)
  • Brunnhartshausen (districts Föhlritz, Steinberg)
  • Buttlar
  • Dünwald (districts Beberstedt, Hüpstedt)
  • Geisa
  • Rodeberg (district Struth)
  • Schleid
  • Südeichsfeld
  • Zella/Rhön

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Bayern

Mariä Himmelfahrt (Assumption of Mary) is only a public holiday in municipalities with a predominantly Catholic population:

• ~1,700 municipalities → public holiday
• ~350 municipalities → not a public holiday

This classification is municipality-specific, not statewide.