Import these files to any of the iCalendar (ics) supported applications such as Google Calendar, Outlook Calendar and Mac iCal . Below are some steps on how you can do it.

Google Calendar:

To import events from iCalendar (ics) or CSV files, just follow these steps:

1. Click the down-arrow next to Other calendars
2. Select Import calendar
3. Click Choose file and find the file (ics) that contains your events, then click Open.
4. Select the Google Calendar where you'd like to import events, then click Import.

Outlook Calendar:

To import events from iCalendar (ics), just follow these steps:

1. On the File menu, click Import and Export.
2. Click Import an iCalendar or vCalendar file (.vcs), then click Next.
3. Locate the folder that contains the file you want to import. In the Files of type list, choose either iCalendar Format or vCalendar Format.
4. Click OK.

Mac iCal:

To import events from iCalendar (ics):

1. Choose File > Import.
2. Locate the iCalendar file (.ics) you want to import.
3. Choose the calendar you want to add the events to.
4. You can also drag a .ics file from your desktop to iCal.