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std::chrono::year_month_weekday::operator sys_days, std::chrono::year_month_weekday::operator local_days

constexpr operator std::chrono::sys_days() const noexcept;
 (1) (since C++20) 
explicit constexpr operator std::chrono::local_days() const noexcept;
 (2) (since C++20)

Converts *this to a std::chrono::time_point representing the same date as this year_month_weekday.

1) If year().ok() && month().ok() && weekday().ok():
  • If index() == 0, returns a sys_days that represents the date 7 days prior to the first weekday() of the year and month.
  • Else, returns a sys_days that represents the date (index() - 1) * 7 days after the first weekday() of the year and month.
Otherwise, the returned value is unspecified.
2) Same as (1), but returns local_days instead of sys_days. Equivalent to local_days(sys_days(*this).time_since_epoch()).

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