Search Schedule From Shared Calendar. ChikkuTakku is service to search schedule from shared calendar and help share calendar
https://www.s-itoc.jp/news/notice/1042
https://sproutrb.connpass.com/event/218321/
http://matsue.rubyist.net/news/2021/07/12/matsu...
https://chiikiokoshi-vr.connpass.com/event/217913/