Clocks go forward Sunday 28 March 2027: your 4-night sleep plan
Summer time starts on Sunday 28 March 2027, in the UK and across the EU. You lose an hour that night, and the body clock does not jump with the clock on the wall. Here is a free plan that moves bedtime earlier in small steps, Wednesday to Saturday.
What changes, and when
- UK: at 1:00 am on the last Sunday in March the clocks go forward 1 hour, to 2:00 am, and British Summer Time starts. In 2027 that is 28 March (GOV.UK).
- EU: summer time begins at 1:00 am Greenwich Mean Time (01:00 UTC) on the last Sunday in March, in every Member State (Directive 2000/84/EC, Article 2). In 2027 that is Sunday 28 March: 02:00 becomes 03:00 in Spain, Paris and Berlin, and 01:00 becomes 02:00 in the Canary Islands and Portugal (our conversion of 01:00 UTC).
- You lose one hour that night. Phones and laptops change on their own; check the oven, the car and any wall clock.
- Evenings are lighter and mornings darker by the clock from Sunday: the UK page says there is more daylight in the evenings and less in the mornings.
A 4-night plan: bed and wake-up 15 minutes earlier each night
The Sleep Foundation, citing the American Academy of Sleep Medicine, says that two to three days before the spring change it may help to wake up 15 to 20 minutes earlier than usual. The arithmetic below is ours: four steps of 15 minutes add up to the one hour you lose.
- Enter your usual bedtime and wake-up time below.
- On each of the 4 nights, Wednesday to Saturday, go to bed and get up 15 minutes earlier than the night before: −15, −30, −45, −60 minutes.
- The clocks go forward during Saturday night, so the −60 minutes you built up is your usual time on the new clock.
- From Sunday, keep your usual bed and wake-up times on the new clock.
Your 4-night plan
Time in bed: 8 h 0 min
- Wed 24 Mar−15 min
- Bed
- 22:15
- Wake up
- 06:15
- Screens off, lights low
- 21:15
- Thu 25 Mar−30 min
- Bed
- 22:00
- Wake up
- 06:00
- Screens off, lights low
- 21:00
- Fri 26 Mar−45 min
- Bed
- 21:45
- Wake up
- 05:45
- Screens off, lights low
- 20:45
- Sat 27 Mar−60 min
- Bed
- 21:30
- Wake up
- 06:30
- Screens off, lights low
- 20:30
The clocks go forward during this night. Your wake-up time is your usual time on the new clock, so you still get the same time in bed.
- From Sunday
Your usual times on the new clock.
Your times are remembered on this device only. Nothing is sent anywhere.
Morning light
Natural light is a driving force behind the body clock, so time outdoors may help you feel less tired and settle your rhythm (Sleep Foundation). At night, a quiet, dark, cool bedroom helps; the NHS suggests earplugs, closed curtains and an eye mask if light or noise is a problem. Mornings are darker by the clock after the change, so open the curtains and get outside early when you can.
Caffeine and evening habits
Tea, coffee and some soft drinks contain caffeine, which can make you feel more awake (NHS). The Sleep Foundation advises being mindful of when and how much caffeine you have, and avoiding alcohol before bed. The NHS suggests no phones, tablets or computers for an hour before bed, which is the “screens off” time in the plan.
A sound mix for the first early night
Rain with a low brown-noise layer at 75% master volume, with a 45-minute sleep timer that fades out by itself. It opens ready to play, free, no account, and works offline.
Opens the player with the mix and the timer already set.
A note for parents
Young children do not know about clocks. Move their routine in small steps over the same days rather than all at once, keep the wind-down routine and the dark room the same, and expect a few unsettled mornings. This is general information only: for a baby or child with ongoing sleep trouble, ask your GP or health visitor.
Questions
Do I lose sleep when the clocks go forward?
You lose an hour on the clock on the night of 27 to 28 March. The Sleep Foundation notes that for most people the effects of springing forward gradually subside over a few days or weeks.
Is the date the same everywhere?
The UK and the EU change on Sunday 28 March 2027, the last Sunday in March. Other countries have their own dates and some do not change the clocks, so check your own region.
Do I have to shift by 15 minutes a night?
No. It is a gentle suggestion. The sources suggest adjusting gradually and keeping the same bed and wake times every day, including weekends (Sleep Foundation, NHS).
Should I nap if I am tired?
The Sleep Foundation says a short nap may give you a boost, and that power naps should last 20 minutes or less to avoid waking up groggy.
Will my phone change by itself?
Phones, tablets and computers normally update on their own if automatic time is on. Clocks on the oven, car, or wall do not, so change them yourself.
Sources
- GOV.UK: When do the clocks change?
page last updated 24 November 2025 - EUR-Lex: Directive 2000/84/EC on summer-time arrangements
Article 2 - Sleep Foundation: Daylight saving time and sleep
page updated 15 July 2026 - NHS Every Mind Matters: How to fall asleep faster and sleep better
Checked on 27 October 2026. The sources do not describe a 15-minute-a-night plan; that part is ours. The Sleep Foundation advice refers to the US spring change in early March; we apply the same idea to the 28 March change.
Next
Join the Bedtime Challenge 4-night clocks-back calculator (autumn 2026) 3-day clocks-back plan (autumn 2026) Clocks go back 2026: EU and US dates and tips Open the noise player Sleep habits with sources