All week-days in Genesis 1 have specific names.
These are (Hebrew, left to right):
Echad (“One”; Sunday); Sheni (“Second”; Monday); Shlishi (“Third”; Tuesday); Reviee (“Fourth”; Wed.); Chamishi (“Fifth”; Thurs.); Yom Ha-Shishi (“The Sixth Day”; Friday); Yom Ha-Sheviee (“The Seventh Day”; Sat.) or Shabbat (Sabbath).
Each of these biblical Hebrew names has a specific numerical value, the sum total of the numeric values of the Hebrew letters comprising the name.
Do these values represent the ordinal position of the days they represent?
Pursuing the same method used by me throughout my research of the Bible and biblical Hebrew (namely, “linear plot indicates same set of values, represented by two different scales”), the attached plot, with the explanatory comments that follow, seem to support the claim expressed in the title of this post: