Here’s a link to the UTA fuel companies Holiday Guide for the rest of Europe as well as France.
It’s a .pdf file and you’ll have to zoom in to be able to read it.
(There are notes on some German holiday dates which refer to the area which has a ban for that holiday. Nur means only, so note 1 6.1. nur in Baden-Württemberg, Bayern, Sachsen-Anhalt means - only in these areas on this date. The note for Switzerland says, 6.1. nicht in allen Kantonen, which simply means - not in all Kantons (areas), not a great lot of help really )