By the twenty-seventh day of the second month, the earth was fully dry.
Here is, 1. The ground dry (Gen 8:13), that is, all the water carried off it, which, upon the first day of the first month (a joyful new-year's-day it was), Noah was himself an eye-witness of. He removed the covering of the ark, not the whole covering, but so much as would suffice to give him a prospect of the earth about it; and a most comfortable prospect he had.
Commenting on Genesis 8:13-14
And in the second month, on the seven and twentieth day of the month,.... This was the month Marchesvan, as the Targum of Jonathan, which answers to part of our October, and part of our November; though according to Bishop Usher (y), this day was Friday the eighteenth of December, A. M.
And in the second month, on the seven and twentieth day - From this it appears that Noah was in the ark a complete solar year, or three hundred and sixty-five days; for he entered the ark the 17th day of the second month, in the six hundredth year of his life, Gen 7:11, Gen 7:13, and continued in it till the 27th day of...