How to import the ICS file to MS Outlook?

Download the ics calendar file to your PC
Open the Outlook calendar
In Outlook, select File > Open & Export > Import/Export
In the Import and Export Wizard box select Import an iCalendar (.ics) or vCalendar file (.vcs)
Click Next
Select the ics calendar file from your PC and select OK
Select Import

The items will be automatically imported into your calendar.