Kosonen:
The second month is November, because the first month by then was October. So the the flood begun the 17th of November. Give or take a few days because we don't know how exactly days in the ancient calendar corresponds with today's.The story of Noah’s ark is a myth so no precise dating can be established for that ‘event’, but it’s derived from a Babylonian myth and their calendar had about 354 or 384 days per year (plus or minus a day in various years) depending on the place in the cycle, at the time based on astronomical observations. The myth was most likely introduced to the Jews during the Babylonian captivity. The second month in the Babylonian calendar (Aru) was Iyar in the Hebrew calendar (basically corresponding to May but generally starting in late April) and there is no basis for asserting the story uses the Hebrew civil calendar (in the earlier Hebrew calendar, the “second month” was Ziv, also equivalent to Iyar), which would place the start of the fictitious flood in the second or third week of May. Relevance to November this year is zero.