[Product-Developers] translating a date in a page template

[Kees Hink]

How can i translate a DateTime object from TAL?

My use case is a custom content type (AT) which has a DateTime field. I would
like to show the date for this field as '%d %B %Y', where %B is the full name of
the month in the site's language. (Site language is Dutch, this is also set in
portal_languages.)

I tried to create a translation using toLocalizedTime()
  <span tal:define="translation python: context.toLocalizedTime(datetime)"
      tal:replace="translation" />
where 'datetime' is a DateTime object. However, this renders the date in
'%d-%m-%Y' format.

Possibly related: Dates in document bylines are shown in English. I have set the
site language to Dutch and the site property localLongTimeFormat to '%d %B, %Y
%I:%M %p'. It shows the right format, but untranslated.

setup:
    *  Plone 3.2.1
    * CMF 2.1.2
    * Zope (Zope 2.10.6-final, python 2.4.5, linux2)
    * Python 2.4.5 (#2, Aug 1 2008, 02:22:02) [GCC 4.3.1]
    * PIL 1.1.6