Germany - Deutschland, but in English

Reformation Day is on October 31, and November 1 is All Saints' Day. It is up to each federal state to decide whether one or neither of these days is an official holiday. (Further information without guarantee).

Berlin and Hesse come away empty-handed.

Reformation Day is a public holiday in Brandenburg, Bremen, Hamburg, Mecklenburg-Western Pomerania, Lower Saxony, Saxony, Saxony-Anhalt, and Thuringia.

In Baden-Württemberg, schools are probably closed.

All Saints' Day is a public holiday in Baden-Württemberg, Bavaria, North Rhine-Westphalia, Rhineland-Palatinate, and Saarland. It is also a public holiday in Austria, Liechtenstein, and parts (?) of Switzerland.

Expect the usual chaos on the day before a public holiday, but multiplied by the traffic from neighboring states and federal states, where people feel compelled to go shopping elsewhere on their "day off".

And if you're residing in an area with small(er) children: Halloween is also celebrated by some people but on a way smaller scale than in the US. You might get small spooky visitors trick or treating but as it's not as common you might wait with a box of candy and nobody's showing up.