[1] 2月30日 - Wikipedia ( ( 版)) http://ja.wikipedia.org/wiki/2%E6%9C%8830%E6%97%A5
[2] February 30 Was a Real Date () https://www.timeanddate.com/date/february-30.html
[3] Arun Bothra 🇮🇳さんはTwitterを使っています: 「Four Pakistani pilgrims coming from Iran caught with fake #coronavirus clearance certificate. Certificate was dated 30/02/2020. Smart boys 😎 https://t.co/L36BFVrYz2」 / Twitter, , https://twitter.com/arunbothra/status/1238644014397526019