Japanese era date慶応4年9月21日 (月)
Keiō 4 . 9 . 21 (Mon)Gregorian date: Monday, September 21st 1868
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TodayZodiac year: Year of the Earth Dragon · 戊辰 (tsuchinoe-tatsu)
Traditional month name: 長月 (nagatsuki)
The Keiō era started on May 1st 1865 and ended on October 22nd 1868.
Note: Japan used a lunisolar calendar until 1872, so month and day differ from historical Japanese records.