Rui Lopes wrote: Do you have the URL for those mappings between airport code and TZ code? Unfortunately I don't, and I don't know of a simple way to get it either. But I once fostered the idea that with ESRI map functionality I could make a conversion utility from Latitude Longitude to the timezone that it was located in, to produce the timezone name for each point on the map given from the user. But it was kept on the idea phase, I never implemented it. If somebody needs this badly and could come up with a money compensation for my work, like US $100, I would surely do it since it was something I was interested in adding to World Time Explorer before. Of course you would need the Latitude and Longitude of the airport codes to do what *you* mentioned, but I assume that would be trivial? Regards, - Jesper Nørgaard Welen No virus found in this outgoing message. Checked by AVG. Version: 7.5.524 / Virus Database: 270.7.4 - Release Date: 2008-09-27 0:00