[Tex/LaTex] How to make a lowercase month name with \today

capitalizationdatetime

All I wish to do is to use \today to output in the format "18 november 2013". With the datetime package I can get to "18 November 2013" with: 

 \documentclass[11pt,twoside,onecolumn,openany,final]{memoir}

 \usepackage[nodayofweek]{datetime}

 \newdateformat{mydate}{{\THEDAY}{ }\monthname[\THEMONTH] \THEYEAR}

 \begin{document}

 \mydate\today

 \end{document}

but after that point I have been unable to have any success in making a lowercase month name. The closest I have been came by adding in the \MakeLowercase command here:

{{\THEDAY}{ }\monthname\MakeLowercase[\THEMONTH] \THEYEAR}

but that for some reason brings in numerals and ends up like this:

18 November [11] 2013

Again, that still falls short of what I would like it to be. Is there a way to to bring in a lowercase command properly here so that for any given date output by \today the format is

18 november 2013

Best Answer

As with Datetime capitalize month, you can redefine the language-appropriate definition that extracts the month name:

enter image description here

\documentclass[11pt,twoside,onecolumn,openany,final]{memoir}% http://ctan.org/pkg/memoir
\usepackage[nodayofweek]{datetime}% http://ctan.org/pkg/datetime
\newdateformat{mydate}{{\THEDAY}{ }\monthname[\THEMONTH] \THEYEAR}
\makeatletter
\renewcommand*{\monthnameenglish}[1][\month]{%
  \@orgargctr=#1\relax
  \ifcase\@orgargctr
  \PackageError{datetime}{Invalid Month number \the\@orgargctr}{Month
  numbers should go from 1 (january) to 12 (december)}%
  \or january%
  \or february%
  \or march%
  \or april%
  \or may%
  \or june%
  \or july%
  \or august%
  \or september%
  \or october%
  \or november%
  \or december%
  \else \PackageError{datetime}{Invalid Month number \the\@orgargctr}{%
  Month numbers should go from 1 (january) to 12 (december)}%
  \fi
}
\makeatother
\begin{document}

\mydate\today

\end{document}

The above works since the default english language is chosen. If you're interested in have non-title-case "short month names", you'd have to redefine also \shortmonthnameenglish:

\renewcommand*{\shortmonthnameenglish}[1][\month]{%
  \@orgargctr=#1\relax
  \ifcase\@orgargctr
  \PackageError{datetime}{Invalid Month number \the\@orgargctr}{Month
  numbers should go from 1 (jan) to 12 (dec)}%
  \or jan%
  \or feb%
  \or mar%
  \or apr%
  \or may%
  \or jun%
  \or jul%
  \or aug%
  \or sept%
  \or oct%
  \or nov%
  \or dec%
  \else%
  \PackageError{datetime}%
  {Invalid Month number \the\@orgargctr}%
  {Month numbers should go from 1 (jan) to 12 (dec)}%
\fi
}
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