id summary reporter owner description type status milestone component version severity resolution keywords cc 1861 time_duration type can not be correctly written or read of the period spans 24 hours of more (vc9 and probably others). ilya@… az_sw_dude "Currently date_time library uses time_put::put (that delegates to strftime) in a non portable way passing it a tm structure with tm_hour field with values outside 0-23 range. See ISO 14882-2003 22.2.5.3.1 par. 1 and ISO 9899-1999 7.23.3.5 par. 3. The issue was already discussed on the Boost mailing list: http://lists.boost.org/Archives/boost/2007/12/131541.php This patch makes boost::date_time::time_facet::put(... , time_duration_type) output %H itself. As well as modifies boost::date_time::time_input_facet::get(... , time_duration_type) to input %H field as a variable length integer. " Patches closed To Be Determined date_time Boost 1.38.0 Problem fixed ilya.bobir@…