Rubyで日本の祝日を取得（iCalendar方式） - Qiita

require 'net/http' require 'icalendar' holiday_ical = Net::HTTP.get(URI::parse("https://calendar.google.com/calendar/ical/ja.japanese%23holiday%40group.v.calendar.google.com/public/basic.ics")).force_encoding("UTF-8") cals = Icalendar.parse(holiday_ical) events = cals.first.events events.map{|e| [e.dtstart, e.summary]} => [[Mon, 23 Sep 2024, "秋分の日 振替休日"], [Sun, 22 Sep 2024, "秋分の日"], [Sat, 23 Sep 2