I would like to challenge your thinking.
In Strong’s Concordance the word ‘day’ is numbered 3117. In the Hebrew the word is pronounced ‘yome.’ It refers to the warm hours of the day, or from sunrise to sunset. It can refer to a period of time from sunrise to the following sunrise. It can also be used figuratively as a space of time, which is defined by an associated term. (Strong’s Hebrew & Chaldee Dictionary p.48)
In the Holy Bible where it tells about creation, the word ‘day’ is defined in the context of the use of the word. God says the evening and the morning were the first day (Gen. 1:5). The evening and the morning were the second day (Gen 1:8). The evening and the morning were the third day (Gen. 1:13). The evening and the morning were the fourth day (Gen 1:19). The evening and the morning were the fifth day (Gen. 1:23). The evening and the morning were the sixth day (Gen. 1:31). Thus, the heavens and the earth were finished and all the host of them (Gen. 2:1). And on the seventh day God ended His work which He had made; and He rested on the seventh day from all His work which He had made (Gen. 2:2).
Creation, thus, commenced the week, which is seven days consisting with each day being a one complete rotation of the earth. This rotation normally takes 24 hours. It has continued in this way to this present time.
Consider now Exodus 20:9-11.
Notice that for six days one is to labor. These six periods of time, as you know, are six 24 hour days. Finally, the seventh day is to be a day of rest. You know this is a 24 hour day. When God says that He made the heaven, the earth, and the sea, and all that is within them in six days, what He is saying is that each day is a 24 hour period of time. To deny this is to misinterpret Scripture and lead to other errors in understanding the Holy Bible.