Genesis 7:10-12

And it came to pass after seven days, that the waters of the flood were upon the earth. {after...: or, on the seventh day} In the six hundredth year of Noah's life, in the second month, the seventeenth day of the month, the same day were all the fountains of the great deep broken up, and the windows of heaven were opened. {windows: or, floodgates} And the rain was upon the earth forty days and forty nights.