\documentclass[a5paper,7pt]{scrreprt}
\usepackage[default]{opensans}
\usepackage[margin=0.55cm,landscape]{geometry}
% \usepackage[height=25cm]{geometry}
\usepackage{timetable}
\usepackage{transparent}
\usepackage{amssymb}
\usepackage{enumitem}
\usepackage{pifont}
\newcommand{\wontfix}{\rlap{$\square$}{\large\hspace{1pt}\xmark}}

\begin{document}
\thispagestyle{empty}
% \begin{landscape}

% Define the layout of your time tables
\setslotsize{3.00cm}{0.25cm}
\setslotcount{6}{52}
\settopheight{2}
\settextframe{0.8mm}

% Retro
\setframetype[t]{1}
\seteventcornerradius{0pt}

% Print timestamps into event blocks
% \setprinttimestamps{2}

% Define event types
%background  foreground

\defineevent{ba}{0.09}{0.45}{0.56}{1.0}{1.0}{1.0}% petrol
\defineevent{all}{0.584}{0.502}{1.0}{1.0}{1.0}{1.0}% lila
\defineevent{ma}{0.69}{0.11}{0.20}{1.0}{1.0}{1.0}% rot
% Start the timetable
\begin{center}
\begin{timetable}
  \hours{8}{15}{0}
  \germandays{1}
  \event 1 {1000}{1630}{Wanderung}{}{HBF}{}{all}{0}
  \event 1 {1800}{2100}{Spieleabend}{}{APB}{}{all}{0}

  \event 2 {0920}{1100}{Begrüßung}{}{}{1}{all}{0}
  \event 2 {1130}{1300}{Tutorien}{}{APB/WIL/SCH}{1}{ba}{2}
  \event 2 {1130}{1300}{Master\\How-to}{}{}{}{ma}{1}
  \event 2 {1300}{1400}{gemeinsames Mensen}{}{}{}{all}{0}
  \event 2 {1400}{1600}{Bunter Nachmittag}{}{}{}{all}{0}
  \event 2 {1800}{1900}{Grillen mit Dewpoint}{}{Countdown}{}{all}{0}
  \event 2 {1900}{2100}{Clubwanderung}{}{}{}{all}{0}

  \event 3 {0830}{0900}{Frühstück}{}{}{}{all}{0}
  \event 3 {0900}{1030}{Vortrag zum Studium}{}{}{}{ba}{0}
  \event 3 {1030}{1300}{Einschreibung}{}{}{}{ba}{0}
  \event 3 {1300}{1400}{Mittagessen}{}{}{}{all}{0}
  \event 3 {1400}{1700}{Gemüseauflauf (Schnitzeljagd über den Campus)}{}{}{}{all}{0}
  \event 3 {1800}{2100}{Filmabend}{}{KIK}{}{all}{0}


  \event 4 {0900}{1100}{online\\Welcome\\session\\CMS}{}{}{}{ma}{1}
  \event 4 {0900}{1100}{Profvrstllng}{}{}{}{ba}{2}
  \event 4 {1100}{1300}{Vortrag Sprachkurse & Auslandsstudium}{}{}{}{ba}{0}
  \event 4 {1300}{1400}{Mittagessen}{}{}{}{all}{0}
  \event 4 {1400}{1530}{Kaffetrinken mit Nerds}{}{}{0}{all}{0}
  \event 4 {1600}{1730}{Feierliche Imma}{}{}{}{all}{0}
  \event 4 {1730}{1900}{Party}{}{HSZ Wiese}{}{all}{0}
  \event 4 {2000}{2100}{Bowling}{}{}{}{all}{1}
  \event 4 {2000}{2100}{Spieleabend}{}{}{}{all}{2}

  \event 5 {0900}{1300}{Seminargruppentreffen & Vortrag studentisches Engagement}{}{}{}{ba}{0}
  \event 5 {1300}{1400}{Mittagessen}{}{}{}{all}{0}
  \event 5 {1400}{1700}{ESE Spiel}{}{}{}{ba}{0}
  \event 5 {1800}{2100}{Neustadt\\ Clubtour}{}{Albertplatz}{}{all}{1}
  \event 5 {1800}{2100}{PnP}{}{APB}{}{all}{2}
  
  \event 6 {0900}{1000}{Stadtführung}{}{siehe Website}{}{all}{0}
  \event 6 {1700}{2100}{LAN Party}{}{siehe Website}{}{all}{0}
\end{timetable}
\end{center}
% \end{landscape}
\end{document}