http://www.diarioeldia.cl/articulo/entregan-fechas-cambio-hora-este-2013 In short, the clocks will go back at the midnight between Saturday the 27th and Sunday the 28th of April, and forward the midnight between Saturday the 7th and Sunday the 8th of September. I will prepare a patch Monday if no one else does so first. -G. -- Glenn Eychaner (geychaner@lco.cl) Telescope Systems Programmer, Las Campanas Observatory