...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::local_time::operator+
// In header: <boost/date_time/local_time/date_duration_operators.hpp> local_date_time operator+(const local_date_time & t, const boost::gregorian::months & m);