Genesis 8:14
And in the second month, on the seven and twentieth day of the month, was the earth dried.
Cross-reference
Genesis 7:11
Historical context
Gen 7:11 records the exact start of the flood (2/17/600), which together with the end date in 8:14 (2/27/601) marks the flood's duration.
Genesis 7:13
Historical context
Gen 7:13 states the entry of Noah and his family into the ark, linking the exit date in 8:14 to the length of their stay.