iCalendar방식으로 구글 캘린더에 공개일정을 추가할 수 있습니다.' : 'All calendars under the public category can be accessed with Google icalendar service.

1. 1. Click the 'Copy' button of Calendar you want to use. Calendar URL will be copied to your clipboard
2. 2. log in to the Google Calendar Service with your own google id(https://calendar.google.com/).
3. 3. In the left side menu, Press 'Add Calendar > From URL' Menu
4. 4. Paste URL(Ctrl+v), and press 'Add calendar' button
5. 5. Check new calendar and it's schedule.