Changes have been made in Git (develop):

commit 3adde19ef06fbb071ed49a3b5e4bf2e94ed36b14
Author: Jan Schneider <jan@horde.org>
Date:   Wed Oct 17 11:56:03 2012 +0200

     Support non-padding operators in date formatting (Bug #10435).

  .../Core/lib/Horde/Core/Script/Package/Datejs.php  |    4 +-
  framework/Core/package.xml                         |    2 +
  framework/Date/lib/Horde/Date.php                  |   26 
++++++++++----------
  framework/Date/package.xml                         |    4 +-
  4 files changed, 19 insertions(+), 17 deletions(-)

http://git.horde.org/horde-git/-/commit/3adde19ef06fbb071ed49a3b5e4bf2e94ed36b14

Changes have been made in Git (master):

commit 3adde19ef06fbb071ed49a3b5e4bf2e94ed36b14
Author: Jan Schneider <jan@horde.org>
Date:   Wed Oct 17 11:56:03 2012 +0200

     Support non-padding operators in date formatting (Bug #10435).

  .../Core/lib/Horde/Core/Script/Package/Datejs.php  |    4 +-
  framework/Core/package.xml                         |    2 +
  framework/Date/lib/Horde/Date.php                  |   26 
++++++++++----------
  framework/Date/package.xml                         |    4 +-
  4 files changed, 19 insertions(+), 17 deletions(-)

http://git.horde.org/horde-git/-/commit/3adde19ef06fbb071ed49a3b5e4bf2e94ed36b14

Same problem with date format in Czech as above (pic in attachment).

Versions:
horde: 5.0.0beta 5
kronolith: 4.0.0beta1

apache2: 2.2.16-6+squeeze7
php5: 5.3.3-7+squeeze14

Well, not all files are in install dir :). Check  /usr/share/php/Horde/Nls.php

Thank You very much for Your answer, but in my version of horde (Horde 
Groupware 4.0.7, in which is Horde 4.0.14 and Calendar (kronolith) 
3.0.16), I can found only: horde_install_dir/config/nls.php and in 
this file there is only array of configuration for languages, but no 
function at all..

I dont know reason but horde use owen version of strftime. This 
function in php works but horde version with cs_CZ.UTF8 no. They have 
some tests for locales and their tests for cs_CZ dont fail .. so it;s 
hard to explain.

very short and working patch is already in different id bug. Shortly 
(copy & paste):


           Working pactch is add this line to Nls.php:
            self::$_cache['nl_info'][$item] =
             preg_replace('/%-([dm])/','%$1',self::$_cache['nl_info'][$item]);
              just before return in getLangInfo($item) - but that not 
nice patch :-)

I just install actual version of horde with Kronolith and have the 
same problem in czech language (not possible to add event in calendar).
I was trying to change lib/Event.php as described but it does not work.
Then I found similar problem:
http://permalink.gmane.org/gmane.comp.horde.devel/19824
.. but it does not help me too.
I try to change js/date/cs-CZ.js according to german one, but it does 
not help too.. :-(

Though I see this too, no idea what's going on.

You have broken system locales then.

I probable found problem.
In (kronolith) lib/Event.php is in function toJson  line:
  $json->sd = $this->start->strftime('%x');
if i change it to:
  $json->sd = $this->start->strftime('%d.%m.%Y');
(and for end date same) then it works ok.
Same problem is in button "Today" in dyn. kronolith (date_format_mini) 
... but if i change it to  anything different (from %x), it works ok.

Seen to be problem only in czech language ...

Hi,
when i change language from English->Czech, then in dynamic kronolith   
Kronolith.conf.date_format  have weird format "%-d%-m.yyyy" (start and 
end date). If i want edit event then i see   "%-d%-m.2011". When i 
want create event then i see at least numbers "%-17-%-34.2011 (second 
number are minutes)

  I tried change in Horde date_format and date_format_mini, but it 
doesnt help. In traditional calendar is everything ok. I tried also 
Germen, French, Slovak and they are ok. Something specific to  czech 
language?
Any hint?


I have latest stable h4 (horde, imp.ingo,kronolith,mnemo,nag,turba).
os : debian - latest stable x64
apache 2.2.16
php 5.3.3-7+squeeze3
postgresql 8.4