month_format_spec month_format() ;

Describe month format -- its an integer in iso format.

const wchar_t * not_a_date() ;

String used printed is date is invalid.

const wchar_t * pos_infinity() ;

String used to for positive infinity value.

const wchar_t * neg_infinity() ;

String used to for positive infinity value.

wchar_t year_sep_char() ;

ISO char for a year -- used in durations.

wchar_t month_sep_char() ;

ISO char for a month.

wchar_t day_sep_char() ;

ISO char for a day.

wchar_t hour_sep_char() ;

char for minute

wchar_t minute_sep_char() ;

char for minute

wchar_t second_sep_char() ;

char for second

wchar_t period_start_char() ;

ISO char for a period.

wchar_t time_start_char() ;

Used in time in mixed strings to set start of time.

wchar_t week_start_char() ;

Used in mixed strings to identify start of a week number.

wchar_t period_sep_char() ;

Separators for periods.

wchar_t time_sep_char() ;

Separator for hh:mm:ss.

wchar_t fractional_time_sep_char() ;

Preferred Separator for hh:mm:ss,decimal_fraction.

bool is_component_sep(wchar_t sep) ;

bool is_fractional_time_sep(wchar_t sep) ;

bool is_timezone_sep(wchar_t sep) ;

wchar_t element_sep_char() ;