'Same Day' in the Bible

In the year of six hundred years of Noah's life, in the second month, in the seventeenth day of the month, in the same day all the fountains of the great deep were divided and the sluices of the heavens were opened.

And Abraham will take Ishmael his son, and all born in his house and bought with his silver, every male among the men of Abraham's house, and he will circumcise the flesh of their uncircumcision, in the self-same day, according to which God spake to him.

And in the self-same day was Abraham circumcised, and Ishmael his son;