During the period between the Sino-Japanese War and the Pacific War, it was recommended (half-coerced) on Koa hokobi (Day for Patriotic Services) and Taisho hotaibi (Day to Reverently Accept the Imperial Edict).
日中戦争から太平洋戦争の時期には、興亜奉公日・大詔奉戴日にこれを推奨（半ば強制）していたこともある。