Gen 1:1-2:3 The end at the beginning?

I thought I would begin my blog with a thought about the beginning. I've been looking at Genesis 1 & 2 for my Hebrew exegesis class, and noticed some things which might be significant. In the numbering the days, the first day is cardinal, and the rest are ordinal. Further, the first five days have no article with the numbering, but the sixth and seventh days have the article. So a translation might be: one day (1:5)... a second day (1:8)... a third day (1:13)... a fourth day (1:19)... a fifth day (1:23)... the sixth day (1:31)... the seventh day (2:2,3). What is the significance of this? Who knows :-) But I'm wondering if the article points to the increased significance of the sixth and seventh days as the culmination of creation. [Originally I had thought only the seventh day had the article, and thought it pointed especially to the seventh day as the perfected consummation. Then I checked again and found an article with the sixth day as well. And maybe it is just my really bad Hebrew, and I've missed something else and actually there is no significance at all. LOL]