Overview
- The clock change will occur in the night between Saturday 24 and Sunday 25 October when clocks move from 03:00 back to 02:00, and standard time will stay in effect until the last weekend of March 2027.
- Terna reports the seven months of daylight saving delivered about €90 million in energy savings this year and cut roughly 140,000 tonnes of CO2, adding to cumulative savings since 2004 of more than 12.3 billion kWh and about €2.4 billion.
- Sleep and circadian experts caution that the one-hour rollback acts like a small jet lag that can cause daytime sleepiness, early awakenings, irritability and concentration problems that usually ease within about five days.
- A limited Stockholm University study cited in coverage found a roughly 4% rise in heart attacks in the week after the switch, largely among older people, a result experts describe as small and specific to a vulnerable group.
- Practical advice for the transition includes using morning light, keeping regular sleep and meal times, exercising, noting that most smartphones auto-update while analog clocks must be changed manually, and the wider political debate over abolishing the semiannual switch in Europe remains unresolved.