What was the typical work day like for a knocker-upper?

A knocker-upper was responsible for waking up people before the invention of alarm clocks. Their typical work day involved walking the streets before dawn, carrying a long stick to tap on people's windows or doors. They needed to keep track of their clients' specific wake-up times and be punctual to avoid any lateness. It was a physically demanding job, often starting as early as 4 or 5 in the morning.