LaTeX \usepackage{datetime} y \usepackage{scrtime} están desfasados ​​por una hora

Question

Quiero imprimir la hora actual en mi archivo LaTeX, pero ambas \usepackage{datetime} muestran \usepackage{scrtime}la hora incorrecta. ¿Puedo corregir a una zona horaria diferente? ¿Ajustar al horario de verano?

Estoy escribiendo, https://www.sharelatex.com/así que supongo que lo que se muestra es la hora del servidor.

Answer 1

Puede acceder a la zona horaria a través de \pdfcreationdate:

\documentclass{article}

\usepackage{etoolbox}

\def\parsepdfdatetime#1:#2#3#4#5#6#7#8#9{%
  \def\theyear{#2#3#4#5}%
  \def\themonth{#6#7}%
  \def\theday{#8#9}%
  \parsepdftime
}

\def\parsepdftime#1#2#3#4#5#6#7\endparsepdfdatetime{%
  \def\thehour{#1#2}%
  \def\theminute{#3#4}%
  \def\thesecond{#5#6}%
  \ifstrequal{#7}{Z}
  {%
    \def\thetimezonehour{+00}%
    \def\thetimezoneminute{00}%
  }%
  {%
    \parsepdftimezone#7%
  }%
}

\def\parsepdftimezone#1'#2'{%
  \def\thetimezonehour{#1}%
  \def\thetimezoneminute{#2}%
}

\newcommand*{\thetimezone}{\thetimezonehour:\thetimezoneminute}

\begin{document}

\expandafter\parsepdfdatetime\pdfcreationdate\endparsepdfdatetime

This document was created on: 
\theyear-\themonth-\theday\ \thehour:\theminute:\thesecond\ \thetimezone.

\end{document}

Para mí, esto muestra:

Editar:

Con esta información, ahora es posible realizar la conversión a otra zona horaria. El siguiente ejemplo se convierte a hora zulú (+00:00):

\documentclass{article}

\usepackage{etoolbox}
\usepackage{pgfkeys,pgfcalendar}

\def\parsepdfdatetime#1:#2#3#4#5#6#7#8#9{%
  \def\theyear{#2#3#4#5}%
  \def\themonth{#6#7}%
  \def\theday{#8#9}%
  \parsepdftime
}

\def\parsepdftime#1#2#3#4#5#6#7\endparsepdfdatetime{%
  \def\thehour{#1#2}%
  \def\theminute{#3#4}%
  \def\thesecond{#5#6}%
  \ifstrequal{#7}{Z}
  {%
    \def\thetimezonehour{+00}%
    \def\thetimezoneminute{00}%
  }%
  {%
    \parsepdftimezone#7%
  }%
}

\def\parsepdftimezone#1'#2'{%
  \def\thetimezonehour{#1}%
  \def\thetimezoneminute{#2}%
}

\newcommand*{\thetimezone}{\thetimezonehour:\thetimezoneminute}

\newcount\julianday
\newcount\dayofweek

\makeatletter
\newcommand*{\setzulutime}{%
  \pgfcalendardatetojulian{\theyear-\themonth-\theday}{\julianday}%
%(\count@ is a temporary scratch count register)
% First adjust the minute offset if non-zero
  \ifnum\thetimezoneminute=0\relax
  \else
    \count@=\theminute\relax
% Add or subtract the offset minute
    \ifnum\thetimezonehour<0\relax
      \advance\count@ by -\thetimezoneminute\relax
    \else
      \advance\count@ by \thetimezoneminute\relax
    \fi
    \edef\theminute{\number\count@}%
% Does the hour need adjusting?
    \ifnum\count@<0\relax
      \advance\count@ by 60\relax
      \edef\theminute{\number\count@}%
% Need to subtract 1 from the hour
% but does the day need adjusting?
      \ifnum\thehour=0\relax
       \def\thehour{23}%
% Day needs adjusting.
       \advance\julianday by -1\relax
      \else
% Subtract 1 from the hour
        \count@ = \thehour\relax
        \advance\count@ by -1\relax
        \edef\thehour{\number\count@}%
      \fi
    \else
% Minute isn't negative. Is it >= 60?
      \ifnum\count@>59\relax
        \advance\count@ by -60\relax
        \edef\theminute{\number\count@}%
% Add 1 to the hour
        \count@ = \thehour\relax
        \advance\count@ by 1\relax
        \edef\thehour{\number\count@}%
% Does the day need adjusting?
        \ifnum\thehour=24\relax
          \def\thehour{00}%
          \advance\julianday by 1\relax
        \fi
      \fi
    \fi
  \fi
% Now adjust the hour offset if non-zero
  \ifnum\thetimezonehour=0\relax
  \else
    \count@=\thehour\relax
    \advance\count@ by \thetimezonehour\relax
% Does the day need adjusting?
    \ifnum\count@<0\relax
      \advance\count@ by 24\relax
      \edef\thehour{\number\count@}%
      \advance\julianday by -1\relax
    \else
      \ifnum\count@>23\relax
      \advance\count@ by -24\relax
      \edef\thehour{\number\count@}%
      \advance\julianday by 1\relax
      \else
        \edef\thehour{\number\count@}%
      \fi
    \fi
  \fi
  \pgfcalendarjuliantodate{\julianday}{\theyear}{\themonth}{\theday}%
  \pgfcalendarjuliantoweekday{\julianday}{\dayofweek}%
}

\makeatother

\begin{document}

\parsepdfdatetime D:20130408144644+01'00'\endparsepdfdatetime

This document was created on: 
\theyear-\themonth-\theday\ \thehour:\theminute:\thesecond\ \thetimezone.

\setzulutime
UTC+00:00 time stamp:
\theyear-\themonth-\theday\ \thehour:\theminute:\thesecond.

\end{document}

Esto produce:

Answer 2

Como, de hecho, sólo es necesario ajustar la hora a su zona horaria, también puede aumentar/disminuir la hora.\ hora actualregistro, proporcionado por elfecha y horapaquete.

\documentclass{article}

\usepackage[nodayofweek]{datetime}

\begin{document}

% Format output
\ddmmyyyydate

% Un-adjusted
[Compiled \today, \currenttime] 
\par

% advance the hour register by nr of hours
% negative values if you want to subtract
\advance\currenthour by 2

%Adjusted output
[Compiled \today, \the\currenthour:\the\currentminute]

\end{document}

Esto dará como resultado lo siguiente:

Notaque esta solución necesita una verificación manual. Si, por ejemplo, el servidor sharelatex.com en el que está compilando se encuentra en una zona horaria diferente, su salida cambia en consecuencia.

EDITAR: Me acabo de dar cuenta de que también hay que tener en cuenta la fecha cuando ajustas la hora según el cambio de día, por ejemplo, la hora en el servidor son las 23:30 y quieres avanzar dos horas...

Considere esto sólo como una solución rápida.