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This question asks why the flood didn't end on the 18th of Cheshvan (one year after the start). My question is more basic: why does the torah give us precise dates here at all? Bereishit 7:11 tells us it began on 17 Cheshvan and Bereishit 8:14 tells us it ended on 27 Cheshvan a year later -- but I don't think we get another precise date before the exodus begins.

Why is it important to tell us the flood began and ended on these exact dates?

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To tell us it was a complete solar year? –  Menachem Oct 31 '13 at 5:07
@Menachem Just say ויהי אחרי שנה תמימה or so. Also, who cares that it was a complete solar year? –  Double AA Oct 31 '13 at 6:50
similar judaism.stackexchange.com/q/17810/759 –  Double AA Oct 31 '13 at 6:50
@Menachem, we get durations without dates all over the place; we know how old people were, that Avraham circumcised Yitzchak on the 8th day, how long the famine in Mitzrayim was... the text is clearly able to tell us about durations without giving us exact dates. So why the exact dates here? –  Monica Cellio Oct 31 '13 at 12:38
I like this question even though I get the sense that there is a question of literary veracity - the more detail, the more acceptable as an accurate story. There is also a parallel to all the later events based in precise dates (holidays, kingships, wars). –  Danno Oct 31 '13 at 17:46

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