'Tonight' in the Bible

It came to pass on the next day, that the firstborn said to the younger, "Behold, I lay last night with my father. Let us make him drink wine again, tonight. You go in, and lie with him, that we may preserve our father's seed."

She said to her, "Is it a small matter that you have taken away my husband? Would you take away my son's mandrakes, also?" Rachel said, "Therefore he will lie with you tonight for your son's mandrakes."