Hopefully it should be possible?
Is someone working on it ? is there any repo?
This would be usefull for me too. I have all my calendars on Outlook.com
In outlook.com it is possible to create an iCal URL for a calendar… Would be great to be able to display iCal data in my home automation system 
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Try this: Integrate iCal-Events
Realise this is really old, but I would like to get my Outlook.com calendars added to Home Assistant… anyone managed this?