Japanese era date昭和20年12月31日 (月)
Shōwa 20 . 12 . 31 (Mon)Gregorian date: Monday, December 31st 1945
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TodayShort form: S20.12.31
Zodiac year: Year of the Wood Rooster · 乙酉 (kinoto-tori)
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.