First of all, how big are you? What is your age? What is your metabolism and general health like? How much food did you have in your stomach to soak up the alcohol so that it didn’t get absorbed into your bloodstream? What kinds of drinks did you have and what was their alcohol content? Keep in mind that even if your body can clear alcohol from your bloodstream at an average rate of 0.015 per hour, a breathalyser or blood test can still detect alcohol for up to 12 hours, a urine test for up to 3 to 5 days, and a hair test for up to 90 days. If you are going to drive, operate a combine harvester, or do anything that requires good concentration and coordination, the best thing to do is not drink at all. Even if it means, heaven forbid, revealing your real sober personality at a party or on a date, it is not worth the risk to try to time your personal alcohol clearance exactly.