How often did you drink a liter of vodka a night?
This is why people with serious drinking problems find the "I drink a beer every night I must be an alcoholic" chat a bit offputting. And look, a bottle of vodka a day leaves some room for a few sober hours, so it's actually not as bad as the people who get withdrawal unless they stay topped up 24/7.
That’s why you or a drinker may have started to get the shakes 24 hours after you first drunk - they haven’t had any etoh in your system for 12+ hours
I use a BAC calculator test, for a 70kg person 20 shots takes more than 40 hours to reach 0 BAC.
(My drivers license requires 0 BAC so I’m aware of one beer taking about 2.5 hours to process fully.)
Have you ever measured? It's quite individual and usually much faster than the formulas they gave you in driving school.