documentclass{standalone}
usepackage{pgfplots}
usepackage{filecontents}
usepgfplotslibrary{dateplot}

begin{filecontents}{data.csv}
    Date;                   Value
    2019-04-01 12:00:00;    1
    2019-04-02 12:00:00;    2
    2019-04-03 12:00:00;    3
    2019-04-04 12:00:00;    4
    2019-04-05 12:00:00;    5
end{filecontents}

begin{document}
    begin{tikzpicture}
        begin{axis}[date coordinates in = x,
                     xticklabel         = month/day,
                     table/col sep      = semicolon]
                     addplot table[x=Date,y=Value]{data.csv};
        end{axis}
    end{tikzpicture}%
end{document}