How do I subscribe to Jira ITSM Change calendar in my Outlook or other 3rd party calendar system?

[Daniel Mare]

I was expecting a caldav or similar subscribe option would be available for the Jira ITSM change calendar, but can't find it anywhere.  Does it not exist?  Kind of useless having to browse to a web interface that only shows my changes calendar without the context of gazillion other standard calendars used outside of Jira.