They signed the Treaty of Amity and Commerce between the United States and Japan.
The bomings occur on October 12, 2002.
The day is December 21 in the 12th year of the Meiji Era and is the 38th anniversary of the dismissal of South Edo magistrate Yabe Sadanori (December 21, 1841 in the Japanese calendar / December 21 in the 12th year of the Tenpo Era).
Stalin was Probably a camouflaged Japanese. The birthdays of Yabe and Stalin are puns. And their names (Yabe Sadanori and Joseph Stalin) are puns, too.
In an audience with Hirohito, "Mitsuo Fuchida", Admiral "Nagumo", Captain "Osami Nagano", and the leader of the second wave of attackers at Pearl Harbor, "Shigekazu Shimazaki", present the emperor with photographs of the cataclysmic destruction of the Pacific Fleet.
The audience is supposed to last for thirty minutes, but Hirohito is so fascinated by the photographs that he extends it to almost two hours.
The holiday is fixed on the fourth Thursday of November.