It appears that the Chilean government has decided to postpone the change from summer time to winter time again, by three weeks to April 2nd:

http://www.emol.com/noticias/nacional/detalle/detallenoticias.asp?idnoticia=467651

This is not yet reflected in the offical "cambio de hora" site, but probably will be soon:

http://www.horaoficial.cl/cambio.htm

-G.
--
Glenn Eychaner (geychaner@lco.cl)
Telescope Systems Programmer, Las Campanas Observatory