Daylight Saving Time Baby Sleep Calculator & Planner

How the planner works

When the clocks go forward, your baby's body clock is suddenly an hour behind the wall clock: a baby who woke at 7:00 tends to wake at 8:00, and bedtime arrives before they feel tired. When the clocks go back, the reverse happens: 7:00 wake-ups become 6:00 wake-ups, and evenings drag.

The gradual methods move every part of the day (wake-up, naps and bedtime) in equal steps before the change, so by the night before, your baby is already living on the new clock's rhythm. Split the difference and switch on the day start after the change instead. The planner computes the change date for your region from the official rules and shows each day's clock times. Times before the change day are on the old clock; from the change day on, they're on the new clock.

None of these methods has been tested head-to-head in babies. The AAP suggests nudging naps and bedtime "a few minutes each day," ideally starting about a week before, and the American Academy of Sleep Medicine suggests 15–20 minutes a night for a few nights for adults. The exact step size is a common rule of thumb, so pick what fits your baby. For typical nap counts and bedtimes by age, see the baby sleep schedule by age. For the reasoning behind each method, read our guide to daylight saving time and baby sleep.

Daylight saving time dates by region

Computed from each region's rule. All changes happen early on a Sunday morning.

Region	Rule	2027	2028
US & Canada	Forward: 2nd Sunday of March. Back: 1st Sunday of November (2:00 a.m.)	Forward: Mar 14, 2027Back: Nov 7, 2027	Forward: Mar 12, 2028Back: Nov 5, 2028
UK & Europe	Forward: last Sunday of March. Back: last Sunday of October	Forward: Mar 28, 2027Back: Oct 31, 2027	Forward: Mar 26, 2028Back: Oct 29, 2028
Australia (NSW, Vic, SA, Tas, ACT)	Back: 1st Sunday of April. Forward: 1st Sunday of October	Back: Apr 4, 2027Forward: Oct 3, 2027	Back: Apr 2, 2028Forward: Oct 1, 2028

Sources: NIST (US), GOV.UK, European Commission, NSW Government. Hawaii and most of Arizona don't observe daylight saving time, and British Columbia stopped changing its clocks after March 8, 2026. The US House passed a bill to make daylight saving time permanent in July 2026 (Roll Call 238); it only becomes law if the Senate passes it and it's signed, so check closer to the date.

Four ways to handle the clock change

Method	Start	How	Often suits
Gradual (15 minutes a day)	4 days before	Move wake-up, naps, meals and bedtime 15 minutes a day until you've shifted a full hour	Most babies; schedule-sensitive sleepers
Faster (30 minutes a day)	2 days before	Same idea in two 30-minute steps	Busy weeks; easygoing sleepers
Split the difference	On the change day	Go halfway (30 minutes) for about 3 days, then use the usual clock times	When you didn't prepare
Switch on the day	On the change day	Use your usual clock times on the new clock and let light and routine do the rest	Flexible sleepers, toddlers

Source: gradual shifting and light timing from the AAP and the American Academy of Sleep Medicine. Step sizes and "often suits" are common practice, not tested in studies.

Light, darkness and safe sleep

Light and darkness are the body clock's strongest timing cues. After the spring change, get outside or open the curtains in the morning and dim the lights in the evening; after the fall change, keep the room dark until the target wake time (AASM).
If you add room-darkening shades, choose cordless ones and move the crib away from windows and window-covering cords (CPSC).
Every nap and every night: on the back, on a firm, flat surface, with nothing else in the crib (AAP 2022). See how much sleep a baby needs for totals by age.

Frequently Asked Questions

How do I adjust my baby's schedule for daylight saving time?▾

Move naps, meals and bedtime a little each day in the direction the clocks will change, ideally starting a few days to a week before. The AAP suggests nudging naps and bedtime a few minutes a day; 15-minute steps over 4 days is a common way to do it. If you don't prepare, you can split the difference for a few days or simply switch to the new clock on the day.

Is spring forward or fall back harder for babies?▾

It depends on the child. The AAP notes that the spring change may be a little easier on young children, who tend to be early risers, while the fall change can make younger kids tired before bedtime and wake earlier than usual. Teens tend to find the spring change harder because they lose an hour of sleep.

How long does it take a baby to adjust to the time change?▾

Usually about a week. The AAP says children typically adjust within about a week, and sleep scientists note the body clock follows light and darkness, so morning light and dim evenings help. If your child is still sleeping poorly after that, talk with your pediatrician.

Should I give my baby melatonin for the time change?▾

Not without talking to your pediatrician first. The AAP says melatonin is not a sleeping pill and should only be used after a discussion with your pediatrician, and reports of melatonin poisonings in children have risen sharply. A one-hour clock change usually settles with a consistent routine and the right light.

When do the clocks change next?▾

In the US and most of Canada, clocks go forward on March 14, 2027 and back on November 7, 2027. In the UK and EU, they go forward on March 28, 2027 and back on October 31, 2027. In the Australian states that use daylight saving, clocks go back on April 4, 2027 and forward on October 3, 2027.

Sources

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