In the timezone rules for Libya, it seems to me there is an obsolete timezone change, at 1.st October 1990 at 0:00, because the Libya Rule is only used in country Libya until 4.th. of May 1990: Rule Libya 1987 1989 - Apr 1 0:00 1:00 S Rule Libya 1987 1990 - Oct 1 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Tripoli 0:52:44 - LMT 1920 1:00 Libya CE%sT 1959 2:00 - EET 1982 1:00 Libya CE%sT 1990 May 4 # The following entries are all from Shanks; # the IATA SSIM data contain some obvious errors. 2:00 - EET 1996 Sep 30 1:00 - CET 1997 Apr 4 1:00 1:00 CEST 1997 Oct 4 2:00 - EET Therefore I suggest that the timezone rule be corrected to Rule Libya 1987 1989 - Oct 1 0:00 0 - This is not a big problem, but might induce some confusion in the reader of the tz database. If there is any other reason to keep this line, please state why. Regards, Jesper 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