On Wednesday, Granma, the official organ of the central committee of the Communist Party of Cuba, wrote that this year Cuba will advance its clocks on midnight, March 10. See <http://www.granma.cubaweb.cu/english/news/art89.html>. The official announcement was published (in Spanish) yesterday <http://www.granma.cubaweb.cu/2007/03/01/nacional/artic01.html>. The announcement doesn't say when the clocks switch back, but for lack of better info I guess we should assume that Cuba will use the US dates for spring and autumn, but switch at midnight standard time, which is their recent tradition. I'll send out a proposed patch soon. PS. I still haven't been able to find any official confirmation for the theory that Haiti will not observe DST this year. The IATA and timeanddate.com are consistent with this theory, but worldtimezone.com disagrees.