共有されているカレンダーからスケジュールを検索します。ちっくたっくはカレンダーの共有やスケジュールを検索するサービスです
"Each year the International Day of Peace is observed around the world on 21 September. The General Assembly has declared this as a day devoted to strengthening the ideals of peace, both within and among all nations and peoples." Find out more at: http://www.un.org/en/events/peaceday/