Spain is set to adjust its clocks this weekend, marking the transition to winter time.

This biannual practice, in place for 50 years, aims to align daily activities with daylight hours to save energy.

However, the effectiveness of this measure is under scrutiny, with critics arguing that the energy savings are minimal and that the time change disrupts people's circadian rhythms, particularly affecting children and the elderly.

Experts suggest that maintaining a single time zone, preferably winter time, could better align with human biological clocks.

Despite the ongoing debate, Spain will continue this practice until at least 2026, when a potential change might be considered.