Japanese era date昭和21年12月31日 (火)
Shōwa 21 . 12 . 31 (Tue)Gregorian date: Tuesday, December 31st 1946
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TodayShort form: S21.12.31
Zodiac year: Year of the Fire Dog · 丙戌 (hinoe-inu)
Traditional month name: 師走 (shiwasu)
The Shōwa era started on December 25th 1926 and ended on January 7th 1989.
The emperor during this era was Emperor Hirohito.