Nonsense of Noah

5.1. How Long on the Ark?
Noah had to gather food and fresh water for the duration of the time spent on the Ark.
Noah was on the Ark for one year, 10 days.

But God didn't tell Noah what the duration of the journey would be!
So, how did Noah know how long the Ark would be afloat?
It is an important question because it determines how much food to bring on board.

Counting the Days

7:11 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.
7:17 And the flood was forty days upon the earth; and the waters increased, and bare up the ark, and it was lift up above the earth.
7:24 And the waters prevailed upon the earth an hundred and fifty days.
8:4 And the ark rested in the seventh month, on the seventeenth day of the month, upon the mountains of Ararat.
8:5 And the waters decreased continually until the tenth month: in the tenth month, on the first day of the month, were the tops of the mountains seen.
8:6 And it came to pass at the end of forty days, that Noah opened the window of the ark which he had made:
8:9 But the dove found no rest for the sole of her foot, and she returned unto him into the ark, for the waters were on the face of the whole earth: then he put forth his hand, and took her, and pulled her in unto him into the ark.
8:10 And he stayed yet other seven days; and again he sent forth the dove out of the ark;
8:11 And the dove came in to him in the evening; and, lo, in her mouth was an olive leaf pluckt off: so Noah knew that the waters were abated from off the earth.
8:12 And he stayed yet other seven days; and sent forth the dove; which returned not again unto him any more.
8:13 And it came to pass in the six hundredth and first year, in the first month, the first day of the month, the waters were dried up from off the earth: and Noah removed the covering of the ark, and looked, and, behold, the face of the ground was dry.
8:14 And in the second month, on the seven and twentieth day of the month, was the earth dried.
8:15 And God spake unto Noah, saying,
8:16 Go forth of the ark, thou, and thy wife, and thy sons, and thy sons' wives with thee

Noah got on the Ark in the second month, seventeenth day of the month when he was 600 year old.
Noah left the Ark in the second month, twenty-seventh day of the month when he was 601.

One year, 10 days.

Just Curious:Amazing that in this time of civilization, they knew about years, months and days.
The concept of years, months and days first appears in Egypt around 4000 BC.
But we learn in Genesis 5 that only Adam and Eve were on the earth in 4000 BC and they didn't have no calendar.