Spain sits in the middle of the Western European time zone, to which Portugal, Morocco and the U.K. also belong. But because of a weird twist of history, it actually observes Central European time, running an hour ahead of daylight. That might sound like no big deal to Americans, who switch their clocks twice a year anyway — but there’s a growing body of evidence that it’s really hurting the Spanish, contributing to everything from low worker productivity to a persistent gender gap.
The problem, argues the report, is that the Spanish keep working until the natural end of daylight hours, even though they’re going to work an hour earlier, on Central time. In other words, their sleep schedules are synced to the “artificial” time zone, but their work hours sync up with daylight time.
Source: Washington Post