To me, about the YEC position, what you say is true in a way. Because I have learned that the use of the word 'day' does not mean in every case 24 hours. or 12 hours. Clearly the universe and geology demonstrate that each day of creation is far longer than 24 hours and the term is used to describe a period of time with a beginning and an end. What I find interesting is that each 'day' is set by the evening followed by a morning because I usually figure a day starts with the morning, but now that I think about it, midnight is usually dark and that's what starts a new day.
as far as we (humans) are generally concerned. Well, anyway...have a nice day, metis.