At noon temperature is 12 degrees f. It drops 2 degrees every hour. At what time is the temperature - 4 degrees?

If it drops 2 degrees every hour and the time is 12:00 it would take 6 hours to get the temperature to 0 degrees and if it wants the temperature to get to - 4 you need 2 more hours so it would take 8 hours and be 8:00 by the time it got to - 4