Clocks Change in October: How to Adjust Your Sleep in 3 Nights

I am Ana Cristina, Sleep Counsellor at Dreamura. On Sunday, 25 October 2026, at 02:00 the clocks go back to 01:00 and you gain an hour. It feels like a gift. The body, however, does not watch the clock: it follows light and routine. That is why, in the first few days, many people wake up earlier and feel sleepy earlier in the late afternoon.

What happens to your sleep when the clocks change

Your body clock lasts about 24 hours and is reset every day by light, especially morning light. When the legal time changes, light arrives an hour earlier relative to the clock. The typical result is waking up around 6:00 instead of 7:00 and feeling sleepy at 21:00 instead of 22:00.

The autumn change is usually easier than the spring one, because you gain time instead of losing it. Even so, in most cases the body takes between three and seven days to settle. Children, babies and people with rigid schedules feel it more.

Three nights of preparation

You do not need to change everything at once. I suggest an adjustment of 15 minutes per night.

• Thursday 22: go to bed 15 minutes later than usual.
• Friday 23: another 15 minutes, that is, 30 minutes after your normal time.
• Saturday 24: another 15 minutes, 45 minutes after your normal time in total. On Saturday night, the clock does the rest.

If you have babies or young children, do the same with mealtimes and bath time. They follow routine more than the clock. The baby sleep guide explains how to keep rhythms stable.

Morning light matters more than the time you go to bed

This is the one rule I always keep. On Sunday morning, go outside within the first 30 to 60 minutes after waking up. Natural light, even on a cloudy day, is much stronger than any bulb at home and tells the brain that the day has begun.

In the evening the opposite happens. Sunset moves to around 17:30, and white lights and screens after 21:00 delay drowsiness. Lower the lighting in the bedroom and living room an hour before sleep. More on this in Blue light and sleep.

What to avoid in these days

• Long naps. If you need one, 20 minutes before 15:00.
• Coffee after 14:00. Caffeine stays in the body for several hours.
• Forcing a weekend catch-up. Sleeping much later on Sunday prolongs the mismatch. The article on sleep debt explains why.
• Alcohol to fall asleep. It helps you drop off, but it fragments the second half of the night.

A short routine that anchors the body

A repeated routine tells the body what comes next. Choose three steps and repeat them at the same time: low light, warm water, five minutes of reading. The night routine guide has a complete step-by-step. If you want to record how you are sleeping in these days, the Sleep Notebook is made for that, and there is more support in the Sleep Hygiene collection.

For the 12 habits that support all of this throughout the year, see the sleep hygiene guide.

When to speak to a professional

If after two weeks you are still waking up in the early hours, feeling sleepy during the day or having trouble falling asleep, it is not just the time change. Speak to your family doctor. Avoid taking melatonin or other supplements on your own without advice, especially if you are pregnant, take medication or have a chronic condition.

Frequently asked questions

When do the clocks change in October 2026?

On Sunday, 25 October 2026, at 02:00 the clocks go back to 01:00. You gain an hour of sleep, but the body follows light and routine, not the clock.

How long does the body take to adapt to the time change?

In most cases, between three and seven days. The autumn change is usually easier than the spring one, because you gain time instead of losing it. Children, babies and people with rigid schedules feel it more.

How can I adjust my sleep in 3 nights?

Go to bed 15 minutes later on Thursday 22, 30 minutes later on Friday 23 and 45 minutes later on Saturday 24. On Sunday morning, go outside within the first 30 to 60 minutes after waking: natural light is what sets the body clock.

Why do I wake up earlier after the clocks change?

The body clock is reset every day by light, especially morning light. After the change, light arrives an hour earlier relative to the clock. The typical result is waking up around 6:00 instead of 7:00 and feeling sleepy at 21:00 instead of 22:00.

What should I avoid in the days after the clocks change?

Long naps (if you need one, 20 minutes before 15:00), coffee after 14:00, forcing a catch-up on the weekend, and alcohol to fall asleep, because it fragments the second half of the night.

If you are unsure how to adjust your household's routine, call me and in 10 minutes I will help you: +351 21 150 95 04.

Ana Cristina, Sleep Counsellor, Dreamura