To share a Hotmail calendar using iCal, log in to your Hotmail calendar and locate the calendar that you wish to share in your list of calendars. Here, I’m going to share my ‘Work’ calendar. Start by clicking it’s name:
On the next screen, locate and click the ‘Edit Sharing’ link that appears:
On the next screen, check the ‘Send people a view-only link to your calendar’ box and then you can copy and paste the iCal link that you wish to share, based on the details you wish to provide.
There are also links to reset the private URLs if you wish to revoke access to your calendar at any point in the future.