There is no magic numbers, sleep differs for each person. But as a good rule of thumb: an average adult needs between 7.5 and 8 hours of sleep per night. But many people can function with 6 hours' sleep, and there also some who need 9 hours or more. The amount of sleep needed to function the next day varies from individual to individual, and is determined genetically and hereditarily.
if you mean how many hours you should sleep in a year it would be 3,650 hours of sleep for a regular year not a leap year
They should have 8 or more hours of sleep in a day.
A nine year should be getting 9-12 hours of sleep.
At least 8 hours of sleep.
A four year old should sleep 12 hours a day
At least 8 hours of sleep.
A ten year old should sleep at least 8 to 9 hours a day.
8 hours
A 5 year old should sleep around 10 to 11 hours and adults should sleep around 7-8 hours.
13 hours sleep per day?
A 17 year old man should have about 7.5-8 hours of sleep each night.
An 8 year old should get 8 hours of sleep because that's what a doctor would recommend