Halloween and All Saints Day

I checked the official website for both Hamburg and Berlin holidays and school vacations in 2016. The last holiday before Christmas is October 3 (Tag der Deutschen Einheit - celebrating reunification.). Berlin kids get the 23rd December off, as well as the week after Christmas but Hamburgers don't. The 26th of December is an official holiday all over Germany.

Allerheiligen is a "silent" public holiday in Baden-Württemberg, Bayern, Nordrhein-Westfalen, Rheinland-Pfalz, Saarland. In the other states, not. (Silent means: no dancing, rock concerts etc.) Halloween isn't a holiday in Germany.

Good Friday, Fri. 25 March - all of Germany (Karfreitag)
Easter, Sun. 27 March - all of Germany (Ostern)
Easter Monday, Mon. 28 March - all of Germany (Oster Montag)
Labor Day, Sun. 1 May - all of Germany
Ascension Day, Thur. 5 May - all of Germany (Christi Himmelfahrt)
Whit Sunday (Pentacost) Sun. 15 May - all of Germany (Pfingsten)
Whit Monday, Mon. 16 May - all of Germany (Pfingst Montag)
Corpus Christi Day, Thur. 26 May - BW, BY, HE, NW, RP, SL
Assumption Day, Mon. 15 Aug. - BY, SL
Day of German Unity, Mon. 3 Oct. - all of Germany
Reformation Day, Mon. 31 Oct. - BB, MV, SN, ST, TH
All Saints' Day, Tues. 1 Nov. - BW, BY, NW, RP, SL
Penance Day, Wed. 16 Nov. - SN

BW = Baden Württemberg
BY = Bayern
BE = Berlin
BB = Brandenburg
HB = Bremen
HH = Hamburg
HE = Hessen
MV = Mecklenburg Vorpommern
NI = Nieder Sachsen
NW = Nordrhein Westfalen
RP = Rheinland Pfalz
SL = Saarland
SN = Sachsen
ST = Sachsen Anhalt
SH = Schleswig Holstein
TH = Thuringen