...

2. Base class already has those operators, so why do you hide them?

Unless I'm missing something the base class provides for comparison to other local times not ptimes:

local_date_time l_time1(...), l_time2(...); if (ltime_1 == ltime_2) {...

1. template<class utc_time_=posix_time::ptime, class tz_type=date_time::time_zone_base<utc_time_> > class local_date_time_base : public date_time::base_time<utc_time_, boost::posix_time::posix_time_system> { 2. template <class T, class time_system> class base_time : private boost::less_than_comparable<T , boost::equality_comparable<T > > { public: typedef T time_type; //!Equality operator -- others generated by boost::equality_comparable bool operator==(const time_type& rhs) const { return time_system::is_equal(time_,rhs.time_); } As you can see date_time::base_time<utc_time_, boost::posix_time::posix_time_system> do provides comparison operator for ptime.

Jeff

Roman Yakovenko