'Ninth' in the Bible

It [is] {a Sabbath of complete rest} for you, and you shall deny yourselves on the ninth [day] of the month in the evening--from evening to evening you must observe your [extraordinary] Sabbath."

And you will sow [in] the eighth year, and you shall eat from the old yield; until the ninth year, until the coming of its yield, you shall eat [the] old [yield].