This could be 537 BCE, with the decree of Cyrus going out the previous year 538 BCE (his first year: 1st Regnal Year or 1st Year as King of Babylon after death of Darius the Mede)
Lokhu kungaba ngu-537 BCE, ngesimemezelo sikaKoresi esiphuma ngonyaka owandulele u-538 BCE (unyaka wakhe wokuqala: 1st Unyaka weRegnal noma i-1st Unyaka njengeNkosi yaseBabele ngemuva kokufa kukaDariyu umMede)