Japanese era date昭和12年9月21日 (火)
Shōwa 12 . 9 . 21 (Tue)Gregorian date: Tuesday, September 21st 1937
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TodayShort form: S12.9.21
Zodiac year: Year of the Fire Ox · 丁丑 (hinoto-ushi)
Traditional month name: 長月 (nagatsuki)
The Shōwa era started on December 25th 1926 and ended on January 7th 1989.
The emperor during this era was Emperor Hirohito.