en_tn_condensed/gen/01/05.md

And there was evening and there was morning, the first day

God did these things on the first day that the universe existed.

evening and morning

This refers to the whole day. The writer speaks of the whole day as if it were these two parts. In the Jewish culture, a day begins when the sun sets. (See: rc://en/ta/man/jit/figs-merism)