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Changement d’heure d’hiver 2025 : tout ce qu’il faut savoir avant de reculer vos montres

Le changement d’heure d’hiver approche à grands pas, marquant comme chaque année la transition vers des journées plus courtes et des soirées plus fraîches. En 2025, le changement d’heure d’hiver interviendra dans la nuit du samedi 25 au dimanche 26 octobre, à 3 heures du matin, moment où il faudra reculer les montres d’une heure. À cette date, il sera donc 2 heures et nous gagnerons 60 minutes de sommeil supplémentaires.

Mais au-delà de ce petit plaisir, cette transition saisonnière suscite toujours autant de débats, entre arguments économiques, impacts sur la santé et questions environnementales.

Pourquoi le changement d’heure d’hiver existe-t-il ?

Le changement d’heure a été instauré en France en 1976, à la suite du premier choc pétrolier. L’objectif principal était d’économiser de l’énergie en profitant davantage de la lumière naturelle en soirée pendant l’été. Ainsi, la France alterne chaque année entre l’heure d’été (UTC+2) et l’heure d’hiver (UTC+1).

Si cette mesure a longtemps été justifiée par la réduction de la consommation électrique, son efficacité est aujourd’hui remise en question. Les économies d’énergie réalisées seraient inférieures à 0,2 % selon l’Ademe (Agence de la transition écologique). En revanche, les effets sur le rythme biologique des personnes semblent bien réels, notamment chez les enfants et les personnes âgées.

Quels sont les effets du changement d’heure sur la santé ?

Le changement d’heure d’hiver peut perturber notre horloge interne. Le passage à l’heure d’hiver oblige notre organisme à s’adapter à une nouvelle exposition lumineuse : les journées paraissent plus courtes, la lumière du jour diminue plus tôt, et notre corps produit davantage de mélatonine, l’hormone du sommeil.

Selon plusieurs spécialistes du sommeil, cette adaptation peut provoquer une fatigue passagère, une baisse de concentration ou encore des troubles de l’humeur. Cependant, contrairement au passage à l’heure d’été, où l’on “perd” une heure de sommeil, celui d’hiver est généralement mieux toléré, car il permet de dormir une heure de plus.

Les experts recommandent néanmoins d’adopter quelques gestes simples pour atténuer les effets du changement d’heure :

  • S’exposer à la lumière naturelle le matin pour réguler son rythme circadien.
  • Éviter les écrans le soir.
  • Maintenir des horaires de coucher et de lever réguliers.
  • Privilégier une alimentation légère et équilibrée.

Vers la fin du changement d’heure ?

Depuis plusieurs années, l’Union européenne débat de la suppression du changement d’heure. En 2019, le Parlement européen a voté en faveur de la fin de cette pratique, laissant à chaque État membre le choix de conserver l’heure d’été ou l’heure d’hiver.

Cependant, la mise en œuvre de cette décision a été reportée à plusieurs reprises, faute d’accord entre les pays. En France, les consultations publiques menées en 2019 ont montré que plus de 80 % des participants souhaitaient abandonner le changement d’heure, avec une préférence pour l’heure d’été.

Pour l’instant, aucun calendrier définitif n’a été fixé, et le changement d’heure d’hiver 2025 aura bien lieu comme prévu.

Comment bien se préparer au changement d’heure d’hiver 2025 ?

Pour que la transition se passe en douceur, il est conseillé d’anticiper le changement d’heure dès quelques jours avant le passage officiel. Voici quelques astuces simples :

  • Décalez votre heure de coucher et de lever de 10 à 15 minutes chaque jour avant le week-end du changement.
  • Planifiez vos activités extérieures le matin pour profiter de la lumière naturelle.
  • Évitez la caféine et les siestes prolongées en fin de journée.

Les professionnels de santé rappellent que le corps humain s’adapte en général en trois à cinq jours. Les enfants et les seniors peuvent cependant nécessiter un peu plus de temps pour retrouver un rythme stable.

Un rituel qui perdure

Malgré les controverses, le changement d’heure d’hiver reste un repère symbolique dans la vie des Français. Il marque le retour des longues soirées à la maison, des repas conviviaux et des fêtes de fin d’année qui approchent.

Alors, le dimanche 26 octobre 2025, n’oubliez pas de reculer vos horloges d’une heure et de savourer votre nuit rallongée. C’est aussi l’occasion parfaite pour adopter des habitudes plus saines, ralentir le rythme et profiter pleinement de cette saison apaisante.

Pour découvrir d’autres actualités de société, d’économie et d’innovation durable, suivez StartupNews.fyi et restez informé des tendances qui façonnent notre quotidien moderne.

by Honey

Major U.S. Airports Face Widespread Flight Disruptions The Federal Aviation Administration (FAA) has ordered an immediate 10% reduction in air traffic at 40 major U.S. airports, including Denver Airport, Dulles Airport, and Newark Airport, due to staffing shortages caused by the ongoing government shutdown. The move has already triggered flight cancellations today, affecting both commercial and private aircraft operations across the country. Transportation Secretary Sean Duffy confirmed that the decision aims to preserve air safety as the FAA faces limited operational capacity. The restriction will remain in effect until normal staffing resumes, putting additional strain on airlines and passengers ahead of the busy travel season. Denver Airport Faces Significant Delays Denver Airport has been among the hardest hit by the FAA’s new directive. Airport officials reported that hundreds of flights were delayed or cancelled due to restricted airspace capacity. Travelers have been advised to check their flight status before heading to the terminal as delays are expected to continue throughout the weekend. A spokesperson for Denver International Airport said: “We are working closely with the FAA and airlines to manage schedules effectively. However, travelers should expect longer wait times and possible flight cancellations today due to the nationwide flight reductions.” The restriction also impacts United Airlines flight status at Denver Airport, one of the carrier’s key hubs. Many passengers have already reported flight delays on both domestic and international routes. Dulles and Newark Airports Also Affected Along with Denver Airport, Dulles Airport and Newark Airport have been forced to adjust flight schedules as part of the FAA’s 10% air traffic reduction. The order covers both commercial and private aircraft, limiting departures and arrivals throughout the day. Several United Airlines flight status and Delta flight status updates indicate numerous route changes and cancellations across the East Coast. Airlines have also begun proactively adjusting schedules to prevent overcrowding at terminals. Airlines Respond to the FAA Restrictions Leading U.S. airlines, including United, Delta, and American, have begun implementing contingency plans. Delta flight status trackers show that several routes through Denver Airport and MCO Airport (Orlando International) have been delayed by several hours. United Airlines issued a statement advising passengers to check their flight status regularly and offering flexible rebooking options without additional charges. The carrier has temporarily reduced frequency on select domestic routes to align with FAA requirements. Private Flights Limited at Major Airports The FAA order also restricts private jet operations at major airports such as Dulles Airport, Newark Airport, and Denver Airport. The new policy prioritizes commercial flights to ensure passenger movement while scaling back non-essential traffic. Private aviation companies have expressed frustration, citing significant business disruptions. Industry analysts expect private flight delays to continue until full staffing levels return at air traffic control centers. Nationwide Impact on Travelers With flight cancellations today across major hubs, thousands of passengers are facing travel chaos. Airlines and airports have urged travelers to verify their flight status before leaving home and to arrive early in case of security or boarding delays. Travel experts recommend …

by Honey

The cryptocurrency market has witnessed heightened volatility this week, with XRP plunging by more than 10% amid dwindling bullish momentum. According to Cryptopolitan, large XRP investors — often referred to as whales — are diversifying into Mutuum Finance (MUTM), a rising DeFi project that has quickly gained traction for its lending-based ecosystem and real-yield tokenomics. XRP Price Struggles Amid Market Pressure The XRP price has been trading within a tight range of $2.16 to $2.52, hovering near its critical Fibonacci support level of 0.382. While bulls are attempting to defend this zone, XRP continues to face resistance around its Exponential Moving Average (EMA) levels, limiting its potential breakout. Analysts suggest that for XRP to regain upward momentum, it must breach the $2.52 resistance. A successful breakout could open the path toward $2.77 to $3.10, but failure to hold support may push prices as low as $1.94. Despite the correction, data shows that open interest in XRP is rising, signaling an impending wave of volatility — though whether it will favor bulls or bears remains uncertain. This unpredictability has led several major holders to reallocate portions of their portfolios into emerging decentralized finance (DeFi) projects like Mutuum Finance, which some describe as a safer bet for short-term growth. Why XRP Whales Are Betting on Mutuum Finance As XRP struggles to maintain momentum, Mutuum Finance (MUTM) has emerged as a promising DeFi token. Priced at $0.035 during its Stage 6 presale, the project has already attracted over 17,800 investors and raised $18.5 million. With 85% of this stage sold, the project is rapidly approaching Phase 7, where the token price will increase to $0.04. The appeal lies in Mutuum Finance’s focus on real yield DeFi mechanics, allowing users to earn passive income through collateralized lending and borrowing systems. By combining transparency, risk management algorithms, and user rewards, the platform positions itself as a utility-driven alternative within a crowded DeFi landscape. For XRP investors, the logic is simple — diversify into projects offering utility and yield potential, especially as regulatory challenges and technical resistance weigh on Ripple’s short-term price action. Mutuum Finance: A DeFi Project on the Rise Mutuum Finance aims to bridge the gap between decentralized lending and sustainable yield generation. Its upcoming Sepolia testnet, expected to launch in Q4 2025, will allow users to deposit ETH or USDT as collateral, borrow funds, and earn rewards through mtTokens that generate MUTM incentives. The testnet will also evaluate core financial functionalities such as: These systems are designed to enhance user trust and platform longevity before a full mainnet rollout in 2026. Ripple vs. DeFi: A Strategic Shift The shift by XRP whales toward Mutuum Finance highlights a growing trend — investors are looking beyond traditional blockchain projects to DeFi ecosystems that promise consistent returns and innovation. While XRP remains a cornerstone of cross-border payment solutions, its price is increasingly influenced by market speculation, macroeconomic shifts, and ongoing legal scrutiny from regulatory authorities. In contrast, projects like Mutuum Finance leverage blockchain’s utility through decentralized …

by Honey

Major Corporate Consolidation in India’s Auto Sector The National Company Law Tribunal (NCLT) has officially approved the merger of Suzuki Motor Gujarat Pvt Ltd (SMG) with Maruti Suzuki India Ltd (MSIL), marking a significant milestone in India’s automotive sector. The tribunal’s green light clears the way for a major corporate consolidation that aims to streamline operations, improve efficiency, and enhance shareholder value for the country’s largest carmaker. A two-member bench of the Principal Bench in New Delhi, comprising President Ramlingam Sudhakar and Member Ravindra Chaturvedi, sanctioned the scheme of amalgamation on November 8, 2025, with April 1, 2025, set as the effective date. In its order, the NCLT stated that there was “no impediment in sanctioning the present scheme,” emphasizing that the merger aligns with the interests of shareholders, employees, and creditors. No Objections from Regulators or Stakeholders According to the Times of India report, all statutory authorities, including the Income Tax Department, Reserve Bank of India (RBI), Securities and Exchange Board of India (SEBI), BSE, and NSE, either supported the merger or raised no objections within the stipulated time. The NCLT noted that the merger application, filed under Sections 230 to 232 of the Companies Act, 2013, will be binding on both Suzuki Motor Gujarat and Maruti Suzuki India, as well as their respective shareholders and creditors. The tribunal also directed that Suzuki Motor Gujarat “shall stand dissolved without the necessity of a winding-up process” once the merger is implemented and a certified copy of the order is filed with the Registrar of Companies. Streamlining Operations for Greater Efficiency The merger is expected to bring several operational advantages for Maruti Suzuki India. Both companies stated in their joint petition that the consolidation will lead to cost efficiencies, administrative streamlining, and faster decision-making. According to their filing, the amalgamation will help eliminate duplication of administrative functions, reduce overhead costs, and enhance manufacturing productivity. The companies also highlighted improvements in key performance indicators such as hours per vehicle (HPV) and direct pass rate, which measure production quality and efficiency. All employees of Suzuki Motor Gujarat will be absorbed into Maruti Suzuki India after the merger becomes effective, ensuring a smooth workforce transition without any layoffs or job insecurity. Background of the Merger Suzuki Motor Corporation (Japan), which owns 58.28% of Maruti Suzuki India’s paid-up share capital, had proposed the merger to simplify its corporate structure and consolidate its manufacturing and sales operations in India. Suzuki Motor Gujarat, established in 2014 as a wholly-owned subsidiary of Suzuki Motor Corporation, manufactures vehicles and supplies them exclusively to Maruti Suzuki India. With this merger, Maruti Suzuki will gain full ownership and operational control over its Gujarat manufacturing facility, which currently produces over 750,000 vehicles annually. This move is expected to strengthen Maruti’s manufacturing capacity, streamline production planning, and reduce procurement and logistical redundancies. NCLT’s Approval and the Road Ahead The NCLT’s approval follows its earlier first motion order passed on June 10, 2025, which cleared the way for the final hearing. With the merger …