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## Struct template eu_dst_trait

boost::date_time::eu_dst_trait — Rules for daylight savings start in the EU (Last Sun in Mar).

## Synopsis

    template<typename date_type>
    struct eu_dst_trait {
      // types
      typedef date_type::day_of_week_type                day_of_week_type;
      typedef date_type::month_type                      month_type;
      typedef date_time::last_kday_of_month< date_type > start_rule_functor;
      typedef date_time::last_kday_of_month< date_type > end_rule_functor;

      // public static functions
      day_of_week_type start_day() ;
      month_type start_month() ;
      day_of_week_type end_day() ;
      month_type end_month() ;
      int dst_start_offset_minutes() ;
      int dst_end_offset_minutes() ;
      int dst_shift_length_minutes() ;
    };

## Description

These amount to the following:

- Start of dst day is last Sunday in March

- End day of dst is last Sunday in Oct

- Going forward switch time is 2:00 am (offset 120 minutes)

- Going back switch time is 3:00 am (off set 180 minutes)

- Shift duration is one hour (60 minutes)

### `eu_dst_trait` public static functions

1.     day_of_week_type start_day() ;

2.     month_type start_month() ;

3.     day_of_week_type end_day() ;

4.     month_type end_month() ;

5.     int dst_start_offset_minutes() ;

6.     int dst_end_offset_minutes() ;

7.     int dst_shift_length_minutes() ;

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