Seventeenth

In the six hundredth year of Noah's life,
in the second month,
on the seventeenth day of the month,
on that day all the fountains of the great deep burst forth,
and the windows of the heavens were opened.
Genesis 7:11 ESV

and in the seventh month,
on the seventeenth day of the month,
the ark came to rest on the mountains of Ararat.
Genesis 8:4 ESV