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Painted sky: the Moon Hour moon in a nightcap asleep on an open book.

9-month-old sleep schedule

How much does a baby sleep at 9 months, how many naps are usual and how long is it awake in between? Guideline values with sources and an example day – not a plan to follow.

At a glance

Sleep per 24 hours12–16 hr
Night11 hr
Naps2 naps
Awake time in between3 hr – 4 hr

Sleep in 24 hours: consensus of the American sleep physicians (AASM, Paruthi 2016) – a value for groups, not for an individual child.

Night: this is what Moon Hour starts out with and then learns your child’s night length.

An example day

This is how Moon Hour might calculate on the first day if a child at 9 months wakes at 7 am and has no entries yet. It is an example, not a plan to follow: children are different, and the app adjusts the times to your child with every entry. Sleep schedule calculator: an example day for your wake-up time

Sleep schedule as a printable PDF (A4)

TimeWhat
7:00 AMWaking up
10:00 AM – 11:15 AMNap 1
2:42 PM – 3:30 PMNap 2
7:30 PMTo bed for the night

What often changes at 9 months

Two naps a day were firmly established at 9 to 12 months in a long-term study (Weissbluth 1995). How much a child sleeps during the day remained a fairly stable trait of the individual child there between 6 and 18 months.

If you are worried

Experts recommend contacting your paediatrician or your local out-of-hours medical service if you are worried.

Sources

General information, not a substitute for medical advice.

Sources checked: November 2026