The second time, the dove returned with an olive leaf freshly plucked in its bill, and so Noah got to know that the waters had abated from the earth Genesis 8 8  11
अर्थात, पृथ्वीवरला एक अमुक भाग पाण्याखाली किती वेळ होता हे कळण्याचा मार्ग आता नाही.