I can't reproduce this bug with glibc 2.1. The program outputs "Okay" for me. glibc 2.1 has a number of patches relative to glibc 2.0.7 for isdst handling in mktime. Andreas -- Andreas Jaeger aj@arthur.rhein-neckar.de jaeger@informatik.uni-kl.de for pgp-key finger ajaeger@aixd1.rhrk.uni-kl.de