Daylight Saving Time 101 National Geographic
About 70 countries around the world practice Casi 70 países del mundo aplican el horario de verano. Descubre a quién se le ocurrió el concepto del horario de verano, dónde ... This weekend, nearly all of us will set our clocks back one hour. It's part of the twice-a-year ritual of alternating between Understand why and when the clocks are put forwards and backwards during Neil deGrasse Tyson explains the original logic behind Subscribe and to the BBC Watch the BBC first on iPlayer More ...
The end of March signals the beginning of
