How to sync a local calendar with an iCloud calendar, automatically.

I have several iCloud calendars including one for the daily business events. I use a local copy (generated to export/import) for sync with other systems like a BB. The export/import step is a stop gap since, first, its manual and, secondly, its not really synchronizing. Hence, my question: is there a SW or a batch process which snycs iCloud calendars with a local calendar??

Thanks

MSt