I'm trying to write a C++ wrapper for the timezone database. I have run ZIC to convert the data to binary files and know where these are. Now I'm having a look at zdump because, when I'm done, I want to convert UTC to a time zone of my choice. Problem is when I run zdump it never seems to return anything different. E.g., thom@hehl /cygdrive/c/javatools/tzinfo/src $ ./zdump America/Anchorage America/Anchorage Mon Oct 24 19:46:24 2011 GMT thom@hehl /cygdrive/c/javatools/tzinfo/src $ ./zdump America/Chicago America/Chicago Mon Oct 24 19:46:34 2011 GMT thom@hehl /cygdrive/c/javatools/tzinfo/src $ ./zdump America/Kentucky/Louiville America/Kentucky/Louiville Mon Oct 24 19:48:21 2011 GMT My clock is current set to Eastern Daylight. Thanks.