'Month' in the Bible

In the six hundredth year of Noah’s life, on the seventeenth day of the second month, on that same day all the fountains of the great deep [subterranean waters] burst open, and the windows and floodgates of the heavens were opened.

On the seventeenth day of the seventh month [five months after the rain began], the ark came to rest on the mountains of Ararat [in Turkey].

The waters continued to decrease until the tenth month; on the first day of the tenth month the tops of the mountains were seen.

Now in the six hundred and first year [of Noah’s life], on the first day of the first month, the waters were drying up from the earth. Then Noah removed the covering of the ark and looked, and the surface of the ground was drying.

On the twenty-seventh day of the second month the land was [entirely] dry.

Then Laban said to him, “You are my bone and my flesh.” And Jacob stayed with him a month.