From Saturday, October 28th to Sunday, October 29th, we must set our clocks back one hour, so that 3:00 a.m. will become 2:00 a.m., thus adapting to winter time.
The new daylight saving time (DST) makes the days shorter (because it gets dark earlier) and therefore reduces natural light. The goal of this change is to reduce energy consumption by aligning the start of the workday with daylight hours.
According to the Institute for Energy Diversification and Saving (IDAE), changing the clocks has the potential to save around €300 million in Spain (€51 million in lighting consumption).
Of that amount, 90 million euros correspond to households, representing an estimated average saving of six euros per home, while the remaining 210 million euros correspond to buildings in the tertiary (service) and industrial sectors.
The European directive mandating the time change was incorporated into Spanish law by a 2002 royal decree.
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