Different time zones / time definitions

hello

our website time is for example 14:46 +0200

one feed (A):

<item>
  <title>xxx</title>
  <pubDate>Mi, 24 Jun 2009 13:41:43 CEST</pubDate>
</item>

another feed (B):

<entry>
  <author><name>xxx</name></author>
  <published>2009-06-24T09:47:40Z</published>
<entry>

so we have different formats for the definition of time in the feeds ...
in the source page of feed B the printed time is 11:47:40 (so it is also +0200)
on our website the printed time is also 11:47:40 - so everything is fine ...

but on our website the time of feed A is printed as 15:41:43 - so it's in the future + the items in a view are always on top - that's not ideal :)
is there a solution to handle this? or what's the reason?

thanks momper