There are several sources that claim that Paraguay made a timezone rule change in autumn 2004, which not only changed the date that Paraguay entered DST in 2004 but will also affect DST dates in 2005. Steffen Thorsen on http://www.timeanddate.com claimed that Paraguay entered DST in autumn 2004 Sunday the 17.th. of October and not Sunday 5.th. of September as would have been predicted by the TZ database. Now in 2005 it claims that Paraguay will enter DST Sunday the 16.th. of October 2005 and not Sunday 4.th. of September as it would be according to the TZ database. I tried to verify this with some internet searches, but could only find one source that interestingly is updating the TZ rules in a local version. The source is http://avi.alkalay.net/linux/zoneinfo/Paraguay.txt and it claims the following rule for Paraguay: # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Paraguay 2002 2003 - Apr Sun<=7 0:00 0 S Rule Paraguay 2002 2003 - Sep Sun<=7 0:00 1 D Rule Paraguay 2004 only - Apr Sun<=7 0:00 0 S Rule Paraguay 2004 max - Oct Sun>=15 0:00 1 D Rule Paraguay 2005 max - Mar Sun>=8 0:00 0 S The rule for "2004 to max" about when Paraguay enters DST, is consistent with Steffen Thorsens dates for 2004 and 2005. However, it also claims that Paraguay leaves DST at different dates now in 2005, at Second Sunday of March instead of First Sunday of April. If this is true, even Steffen will have to change his database. I wonder if any of the members of the TZ mailing list can confirm these facts. A quote from the exact text of the timezone decrees corresponding would be the best, of course. Regards, Jesper Nørgaard Welen Jesper Nørgaard Welen Email: jnorgard@Prodigy.Net.mx Project Leader (Líder de Proyecto) Software CIMMYT - Centro Internacional de Mejoramiento de Maíz y Trigo Dirección: CIMMYT Int. c/o Jesper Nørgaard Km. 45, Carretera México-Veracruz El Batán Texcoco, Edo. de México CP 56130 MEXICO Tel.: +52 (5) 58-04-20-04 ext. 1374 Fax: +52 (5) 58-04-75-58 Tel. Casa: 53-10-05-95 ó 53-10-97-78 Download the free program World Time Explorer, I made: http://www.cimmyt.org/timezone/index.htm