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551 BC

Confucius

Traditional birth of Kong Qiu (Confucius)

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The famous 28 September birthday may be a calendrical retrofit. Published reconstructions differ by a year and by several days.

A birth with a disputed year

Traditional accounts place the birth of Kong Qiu in Zou, within the state of Lu, in modern Shandong near Qufu, in 551 BCE. The globally familiar name Confucius is a Latinized honorific meaning roughly "Master Kong"; Qiu was his personal name.

The year itself is genuinely disputed. The standard chronology follows the twenty-second year of Duke Xiang, used by Sima Qian and favoured by most modern scholars, while other readings of the Gongyang and Guliang traditions put the birth in Duke Xiang's twenty-first year — 552 BCE.

And a disputed day

The officially commemorated date is 28 September 551 BCE. It is a traditional conversion rather than an independently verified one.

Published calendar reconstructions produce other answers, among them 3 October 552, 9 October 552 and 4 October 551 BCE.

Nothing contemporary describes it

No contemporary account describes the delivery, a ceremony, or any immediate public consequence. The detailed biographies were assembled centuries afterwards from heterogeneous traditions; Sima Qian wrote roughly three hundred years later, and modern scholarship warns that many of his anecdotes were shaped to carry didactic messages.

His story that the parents prayed at Mount Ni is treated as a legendary or didactic birth narrative, not a documented cause.

Even the parents are traditions. The father is usually identified as Shu He of Zou, a Lu military figure mentioned in the Zuozhuan, though many details later assigned to him are uncertain; later tradition links the mother to the Yan family and calls her Yan Zhengzai, but the scholarly biographical survey says nothing certain is known about her.

Sources

Researched 23 Aug 2026 5 sources 2 audit passes Date disputed

How this was checked

Researched from the web into a fact sheet, rewritten from that sheet, then audited against it by a different model. How the pipeline works →

Date disputed. Sources disagree; the research places it at ~-0551.

What the sources leave uncertain

  • The year is genuinely disputed. The standard 551 BCE chronology follows the twenty-second year of Duke Xiang used by Sima Qian and favored by most modern scholars; other readings of the Gongyang and Guliang traditions place the birth in Duke Xiang's twenty-first year, 552 BCE.
  • The familiar 28 September date is not secure. Published calendar reconstructions produce other dates, including 3 October 552, 9 October 552, and 4 October 551 BCE.
  • The surviving biographies are retrospective. Sima Qian wrote approximately three centuries after Confucius, and modern scholarship warns that many anecdotes were shaped to carry didactic messages.

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