What preset time schedule will it be? Rethinking daylight saving time.

The article critically examines the foundations and implications of seasonal clock changes, commonly known as daylight saving time (DST), focusing on how these adjustments synchronize social schedules with varying sunrise times at extratropical latitudes. It challenges the view that DST artificially alters sunrise and sunset times, arguing instead that it shifts social time schedules to better align with natural morning light, which is crucial for human circadian rhythms. The discussion highlights historical precedents, such as the Spanish National Assembly's early summer sessions in 1810, and emphasizes that human activity patterns tend to follow solar time regardless of official time zones. Ultimately, the article frames seasonal clock changes as a practical compromise balancing physiological needs and societal schedules rather than a purely artificial or harmful practice.