Display a calendar on your site
If you choose to share your calendar with others, you can create a webpage where they can browse through your calendar 〓 even if they don’t have a Google Calendar account. You can also embed an interactive calendar of your events into your website or blog.
自分のGoogle CalendarをGoogleアカウントがないユーザにも、手軽に公開できないかと思っていたら、新機能で実現出来るようになったようだ。便利。