# Module Pl_Date_Calc

    module Pl_Date_Calc: sig .. end

Wrapper around Perl `Date::Calc` class.

    val days_in_year : int -> int -> int

    val days_in_month : int -> int -> int

    val weeks_in_year : int -> int

    val leap_year : int -> bool

    val check_date : int -> int -> int -> bool

    val check_time : int -> int -> int -> bool

    val check_business_date : int -> int -> int -> bool

    val day_of_year : int -> int -> int -> int

    val date_to_days : int -> int -> int -> int

    val day_of_week : int -> int -> int -> int

    val week_number : int -> int -> int -> int

    val week_of_year : int -> int -> int -> int * int

    val monday_of_week : int -> int -> int * int * int