Despite the aforementioned analysis, the traditional argument for the “calendar day” interpretation of “Yom” (יום‎) is Genesis 1:5b which reads, “There was evening (“erev” עֶ֤רֶב) and there was morning (“boker” בֹ֖קֶר), the first [era] (“yom” יום‎).” Each of the six eras of creation includes this closer.