#66 When using scrlttr2 class with package datetime2 option numericaldate does not work

[Markus Kohm]

When using scrlttr2 with option numericaldate to get a numerical date instead of a symbolic date at the notepaper and also using package datetime2 to be able to use, e.g., \DTMtoday to get a date with month name, the automatically printed date at the notepaper is also with month name instead of numerical:

\documentclass[12pt,a4paper,ngerman,numericaldate]{scrlttr2}

\usepackage{babel}
\usepackage[useregional]{datetime2}

\begin{document}
\begin{letter}{
      An\\
      alle Interessenten\\
      00000 Hier
    }

    \opening{Hi,}

   das aktuelle Datum ist \DTMtoday

    \closing{Mit freundlichen Grüßen}

\end{letter}

\end{document}

[Markus Kohm]

This is not a bug of KOMA-Script. It is a kind of feature of package datetime2. The package explicitly uses

\@ifclassloaded{scrlttr2}{\AtBeginDocument{\let\today\DTMtoday}}{}

to overwrite scrlttr2 option numericaldate. IMHO it would be better, if datetime2 would not do this, but this is an acceptable design decision of the datetime2 author.

As a workaround you can use:

\documentclass[12pt,a4paper,ngerman,numericaldate]{scrlttr2}

\usepackage{babel}
\usepackage[useregional]{datetime2}
\AtBeginDocument{\expandafter\selectlanguage\expandafter{\languagename}}
\begin{document}
\begin{letter}{
      An\\
      alle Interessenten\\
      00000 Hier
    }

    \opening{Hi,}

    das aktuelle Datum ist \DTMtoday

    \closing{Mit freundlichen Grüßen}

\end{letter}

\end{document}

As an alternative see the datetime2 manual about configure datetime2 to show the numerical date (and later reconfigure it to again show the textual date).

From [r4107] you can alternatively use class scrletter or another class with package scrletter. For those datetime2 does not break option numericaldate. But before with versions before [r4107] this would not work because of bug [#65].