On what calendar date did Genesis say Noah entered the Ark before the Flood?

Genesis says Noah entered the Ark on the seventeenth day of the second month before the Flood began.

Genesis 7:11 gives this date while also placing the beginning of the great watery upheaval in Noah’s 600th year. The verse describes the fountains of the deep breaking open and the windows of heaven opening, followed by the rain described later in the chapter.

The date belongs to Genesis’s internal chronology, which uses months and numbered days rather than a modern calendar label. It should not be converted confidently into a Gregorian date because the ancient calendar system and the intended month structure are debated.

Other dates in the account are distinct. The Ark rests on the mountains of Ararat on the seventeenth day of the seventh month, while the ground is described as dry in the first month of Noah’s 601st year.