Hi Bernd,

Ouch! Good catch... John Greaves actually pointed out a
list of mutual events to me, some months ago, at

http://cdsarc.u-strasbg.fr/viz-bin/Cat?J/A%2BA/485/293

...as well as mutual events of Jupiter for 2009-2010, at

http://www.aanda.org/index.php?option=article&access=standard&Itemid=129&url=/articles/aa/full/2008/04/aa8736-07/aa8736-07.right.html

...and I just found a list for the mutual events at Uranus for
2007-2009.

I've posted a file for the Saturn events at

http://www.projectpluto.com/saturn09.etb

and will put in a bit of time on the other two lists shortly.

-- Bill