It's a common term in the UK, meaning a holiday where banks are closed, including religious holidays. So what most people know as just a regular holiday.
Assumption Day on 15 August is a nationwide public holiday in Andorra, Austria, Belgium, Burundi, Cameroon, Central African Republic, Chile, Republic of Congo, Côte d'Ivoire, Croatia, Colombia, Costa Rica, Cyprus, East Timor, France, Gabon, Greece, Georgia, Republic of Guinea, Haiti, Italy, Lebanon, Liechtenstein, Lithuania, Luxembourg, Republic of North Macedonia, Madagascar, Malta, Mauritius, Republic of Moldova, Monaco, Montenegro (Albanian Catholics), Paraguay, Poland (coinciding with Polish Army Day), Portugal, Romania, Rwanda, Senegal, Seychelles, Slovenia, Spain, Syria, Tahiti, Togo, and Vanuatu;[56] and was also in Hungary until 1948.
We do ALL the religious holidays. And there will be mass somewhere all day tomorrow. I have 3 churchbells in hearing distance and they each ring like 20- 30min at the beginning AND end of each service. Probably starting between 6 and 7am tomorrow morning. There will be absolutely no quiet tomorrow and at the end I'll have bells ringing in my head.
I know you have it in Bavaria. The calendar at work shows all the public holidays in Germany without saying in which Bundesland it applies.
Can you imagine my boss' disconcert last week when he was telling everyone the meeting next week is cancelled because of holidays in Germany and I break it to him it is not for us. It is for our colleagues in France and in Poland, but not us :(