Hello, as i could not google out an answer for my problem with boost/date_time/dst_rules.hpp: is there a reason why "boost::date_time::dst_calculator::process_local_dst_start_day()" returns "invalid_time_label" for the transition time, but "process_local_dst_end_day()" returns "ambigous" ? Or is it just a bug ? Thanks, Michael Haubenwallner -- Michael Haubenwallner SALOMON Automation GmbH Forschung & Entwicklung A-8114 Friesach bei Graz mailto:michael.haubenwallner@salomon.at http://www.salomon.at