Japanese era date昭和4年7月21日 (日)
Shōwa 4 . 7 . 21 (Sun)Gregorian date: Sunday, July 21st 1929
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TodayShort form: S4.7.21
Zodiac year: Year of the Earth Snake · 己巳 (tsuchinoto-mi)
Traditional month name: 文月 (fumizuki)
The Shōwa era started on December 25th 1926 and ended on January 7th 1989.
The emperor during this era was Emperor Hirohito.