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Class template us_dst_rules

boost::date_time::us_dst_rules — Depricated: Class to calculate dst boundaries for US time zones.

Synopsis

template<typename date_type_, typename time_duration_type_, 
unsigned int dst_start_offset_minutes = , 
short dst_length_minutes = > 
class us_dst_rules {
public:
// types
typedef time_duration_type_ time_duration_type;
typedef date_type_ date_type;
typedef date_type::year_type year_type;
typedef date_type::calendar_type calendar_type;
typedef date_time::last_kday_of_month< date_type > lkday;
typedef date_time::first_kday_of_month< date_type > fkday;
typedef date_time::nth_kday_of_month< date_type > nkday;
typedef dst_calculator< date_type, time_duration_type > dstcalc;

// public static functions
static time_is_dst_result 
local_is_dst(const date_type &, const time_duration_type &) ;
static bool is_dst_boundary_day(date_type) ;
static date_type local_dst_start_day(year_type) ;
static date_type local_dst_end_day(year_type) ;
static time_duration_type dst_offset() ;
};

Description

us_dst_rules public static functions

  1. static time_is_dst_result 
    local_is_dst(const date_type & d, const time_duration_type & td) ;

    Determines if the time is really in DST or not. Also checks for invalid and ambiguous.

  2. static bool is_dst_boundary_day(date_type d) ;
  3. static date_type local_dst_start_day(year_type year) ;
  4. static date_type local_dst_end_day(year_type year) ;
  5. static time_duration_type dst_offset() ;
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