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Hello,

My father has MacBook Pro Retina and smartphone Nokia Lumia 820. He wants to synchronise iCal on Mac with Outlook calendar on Lumia. How to reach it?
iCal can be synced using the CalDav standard. So take the Caldav settings listed here, then enter those settings on the phone. I found a video here I think will help you find where to enter those settings.
 
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