Manipulate Boost posix time output # g++ boostposixtime.cpp -o boostposixtime; ./boostposixtime

boostposixtime.cpp

// to have the cout ("equivalent" to printf)
#include <iostream>

// to have string stream
#include <sstream>

#include <boost/date_time/posix_time/posix_time.hpp>
#include <boost/date_time/posix_time/posix_time_io.hpp>

using namespace boost::posix_time;
using namespace std;

int main(int argc, char **argv) {

  //time_facet *facet = new time_facet("%d-%b-%Y %H:%M:%S");
  time_facet *facet1 = new time_facet("%a, %d %b %Y %H:%M:%S %Z");
  time_facet *facet2 = new time_facet("%a, %d %b %Y %H:%M:%S GMT");

  stringstream MyStr;

  cout.imbue(locale(cout.getloc(), facet1));
  MyStr.imbue(locale(cout.getloc(), facet2));

  
  cout << second_clock::local_time() << endl;
  cout << microsec_clock::universal_time() << endl;

  MyStr << microsec_clock::universal_time() ;
  cout << "--- Display My own string: " << MyStr.str() << endl;

  return 0;
}