According to the Parents Magazine website, children around 12 months of age take up to two naps during the day and sleep for about 11 1/2 hours at night. This is a total of about 14 hours of sleep out of every 24 hours.

According to BabyCenter, an expert pregnancy information website, at 18 months of age, children begin to give up their morning nap and only need one nap, usually between noon and 2 p.m. in the afternoon. Experts also advise not to let children sleep past 3 p.m. or 4 p.m. in the afternoon to prevent difficulties falling asleep at night.