Polish juggling conventions can be found on: the Juggling Edge www.jugglingedge.com/events.php
or Kuglarstwo www.kuglarstwo.pl
If you want to subscribe to these calendars (ie automatically have Polish juggling conventions added to your own on-line calendar) you can click on the button at the bottom right of the calendar.
It is also possible to just add individual events to your calendar, click on the event and then click on the "copy to my calendar" link.