I've never seen a wind-up alarm clock that could distinguish between AM and PM. So in all likelihood, the alarm will go off at 9pm and you will get one hour of sleep. But if we play along with the premise and assume that there is some way to make the clock go off at 9am and not 9pm, then you would get 13 hours of sleep, assuming you instantly fell asleep at 8pm and nothing woke you up in the night and that you could somehow sleep soundly for that amount of time and that you woke up instantly when the alarm went off.
the always had hangovers so they never woke up
You would only get one hour of sleep. There is no am/pm setting on a wind up alarm clock.
Vacuuming at 8pm may disturb others if they are trying to relax or sleep. It's considerate to vacuum during daytime hours to avoid causing noise disruptions.
12-8pm
Marshalls is open from 11am-8pm
from 6am to 8pm
8-12 Hours 8hr 10PM-6AM 12hr 8PM-8AM
December 16th 8PM-December 24th 8PM
8pm to 7am is 11 hours.
After 8pm! 8pm to 11pm every day..
Santa will visit Crandwell Street between 8pm and Midnight.