This entry records the conquest at 1046 BCE, the date used by the PRC-sponsored Xia-Shang-Zhou Chronology Project and now the most commonly cited figure, but that project's methodology has been challenged and earlier sinology proposed dates ranging from about 1122 BCE to 1027 BCE depending on which astronomical and bronze-inscription evidence is weighted. No single date commands unanimous scholarly agreement.
What would resolve this A convergent re-dating combining Western Zhou bronze inscription chronology, oracle-bone records and independent astronomical reconstruction of the recorded Zhou conquest omens (a dense five-planet clustering and a comet) that the current 1046 BCE figure already rests on but that rival reconstructions read differently.
OpenSinology and archaeoastronomyMandate of Heaven (Wikipedia)