I have found a website that claims a different time for the GMT offset change for Sri Lanka than we have in the present 2006c. The page http://news.sinhalaya.com/wmview.php?ArtID=11002 claims the following: 13 April 2006 - 07:38 Change in Sri Lanka Standard Time Ministers have approved a Cabinet Memorandum submitted by Disaster Management and Human Rights Minister Mahinda Samarasinghe to revert the clock by 30 minutes from April 14 midnight. With the implementation of this decision, the Sri Lanka Standard Time (SLST) reverts back to the zone GMT +5 1/2 hours, which was used prior to May 24, 1996 for over 50 years. It is necessary to put the clock back by half an hour at 0030 hrs on April 15. This means 0030 hrs on April 15, 2006 (midnight of April 14, 2006 +30 minutes) at present, become 2400 hours of April 14, 2006 (midnight of April 14, 2006). === end of article === This is different than the tz database which will have the change at midnight of the 13.th. of April, thus putting time back to 23:30 the 13.th. of April. Steffen Thorsen on http://www.timeanddate.com/worldclock/results.html?query=colombo however has it from 13.th. of April at 0:30 returning to 13.th. of April 0:00, e.g. almost 48 hours before news.sinhalay.com will have it. Perhaps Steffen could enlighten us on his source (usually local web users)? Although the article from news.sinhalay.com is not official, it is the first one I have seen that gives explicit instructions about what time to adjust the clocks. So who are we to believe? Regards, 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 (55) 58-04-20-04 ext. 1374 Fax: +52 (55) 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.worldtimeexplorer.com/index.html