Thanks, Christoph. I have now subscribed to the lxde fedora mailing list.
Edit /etc/xdg/lxsession/LXDE/autostart and change the line that reads or remove it completely. Instead add a line for xplanet
@xplanet
I have also added
@oclock -geometry -0+0 -tr -fg red -bd red -jewel red
to get the oclock autostarted there (and it works). However, I would like to add this clock on all my desktops as well as without the border. Do you know how I can do this using the autostarted feature? It is a bit of a bother to actually have to go and click the bar at the top of the oclock each time.
Many thanks and best wishes, Ranjan