Hi, I'm trying to build an equivalent to java's System.currentTimeMillis() using boost framework, and I've done something like that : #include using namespace boost::gregorian; using namespace boost::posix_time; //.... Other code long Utils::getCurrentTime() { ptime now(microsec_clock::universal_time()); date d(1970,boost::date_time::Jan,01); ptime torigin(d); //midnight //time_duration tduration = now - torigin; time_period tperiod(torigin,now); //long returnVal = tduration.total_milliseconds(); long returnVal = tperiod.length().total_milliseconds(); cout << "Current time : " << returnVal << endl; return returnVal; } Unfortunately, it gives only a 8 digit number (in java you've got a 13 digit number when using currentTimeMillis) so I suspect that it does not give a duration since Jan the 1st 1970 (which is java reference). Do you have an idea of how to achieve the writing of this piece of code? Thanks, regards. Philippe Mondon Equipe PAC/Architecture DIMC Calyon Ce message et ses pièces jointes (le "message") est destiné à l'usage exclusif de son destinataire. Si vous recevez ce message par erreur, merci d'en aviser immédiatement l'expéditeur et de le détruire ensuite. Le présent message pouvant être altéré à notre insu, CALYON Crédit Agricole CIB ne peut pas être engagé par son contenu. Tous droits réservés. This message and/or any attachments (the "message") is intended for the sole use of its addressee. If you are not the addressee, please immediately notify the sender and then destroy the message. As this message and/or any attachments may have been altered without our knowledge, its content is not legally binding on CALYON Crédit Agricole CIB. All rights reserved.