Birthday calendar

Edit and compile if you like:

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% Birthday calendar
% Author: Hakon Malmedal
\documentclass[fontsize=20pt]{scrartcl}
\usepackage[norsk]{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage[margin=1cm,a4paper,landscape]{geometry}
\pagestyle{empty}
\usepackage{graphicx}
\usepackage{tikz}
\usetikzlibrary{calendar,fit}
\usepackage{expl3,xparse}
%% Adapted from http://tex.stackexchange.com/a/10199/4771
\makeatletter%
\tikzoption{day headings}{\tikzstyle{day heading}=[#1]}
\tikzstyle{day heading}=[]
\tikzstyle{day letter headings}=[
    execute before day scope={ \ifdate{day of month=1}{%
      \pgfmathsetlength{\pgf@ya}{\tikz@lib@cal@yshift}%
      \pgfmathsetlength\pgf@xa{\tikz@lib@cal@xshift}%
      \pgftransformyshift{-\pgf@ya}
      \foreach \d/\l in {0/Mandag,1/Tirsdag,2/Onsdag,3/Torsdag,%
                         4/Fredag,5/Lørdag,6/Søndag} {
        \pgf@xa=\d\pgf@xa%
        \pgftransformxshift{\pgf@xa-\cellwidth/2}%
        \pgftransformyshift{\pgf@ya}%
        \node[above=-0.5ex,day heading]{\l};%
      }
    }{}%
  }%
]
\makeatother%
%% End
%% Adapted from pgf source
\def\pgfcalendarmonthname#1{%
  \translate{\ifcase#1\or Januar\or Februar\or Mars\or April\or
    Mai\or Juni\or Juli\or August\or September\or Oktober\or
    November\or Desember\fi}%
 
 
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