No, you are wrong.
Gen 2:4 demands that "yom" in the 6/7 days of Creation the Hebrew word for "day" be translated as an indefinite period of time.
Since the first three days happened before the Sun was created, this reinforces that yom cannot be 24 hrs in this case.
Then by your definition, Evening and Morning are indefinite time periods, also.
You cannot have it both ways.