module Period :
  sig
    module type S =
      sig
        type t
        val empty : t
        val add : t -> t -> t
        val sub : t -> t -> t
        val opp : t -> t
        val equal : t -> t -> bool
        val compare : t -> t -> int
        val hash : t -> int
      end
  end
module Utils :
  sig
    module type Comparable =
      sig
        type t
        val equal : t -> t -> bool
        val compare : t -> t -> int
        val hash : t -> int
      end
    module Int :
      sig
        type t = int
        val equal : t -> t -> bool
        val compare : t -> t -> int
        val hash : t -> int
      end
    module Float :
      sig
        type t = float
        val equal : t -> t -> bool
        val compare : t -> t -> int
        val hash : t -> int
        val set_precision : float -> unit
        val round : t -> int
      end
  end
module Time_Zone :
  sig
    type t = CalendarLib.Time_Zone.t = UTC | Local | UTC_Plus of int
    val current : unit -> t
    val change : t -> unit
    val gap : t -> t -> int
    val from_gmt : unit -> int
    val to_gmt : unit -> int
    val is_dst : unit -> bool
    val hour_of_dst : unit -> int
    val on : ('a -> 'b) -> t -> 'a -> 'b
  end
module Time :
  sig
    type t = CalendarLib.Time.t
    type field = [ `Hour | `Minute | `Second ]
    type second = int
    module Second :
      sig
        type t = second
        val from_int : int -> t
        val from_float : float -> t
        val to_int : t -> int
        val to_float : t -> float
      end
    val make : int -> int -> second -> t
    val lmake : ?hour:int -> ?minute:int -> ?second:second -> unit -> t
    val now : unit -> t
    val midnight : unit -> t
    val midday : unit -> t
    val convert : t -> Time_Zone.t -> Time_Zone.t -> t
    val from_gmt : t -> t
    val to_gmt : t -> t
    val normalize : t -> t * int
    val hour : t -> int
    val minute : t -> int
    val second : t -> second
    val to_seconds : t -> second
    val to_minutes : t -> float
    val to_hours : t -> float
    val equal : t -> t -> bool
    val compare : t -> t -> int
    val hash : t -> int
    val is_pm : t -> bool
    val is_am : t -> bool
    val from_seconds : second -> t
    val from_minutes : float -> t
    val from_hours : float -> t
    module Period :
      sig
        type t = CalendarLib.Time.Period.t
        val empty : t
        val add : t -> t -> t
        val sub : t -> t -> t
        val opp : t -> t
        val equal : t -> t -> bool
        val compare : t -> t -> int
        val hash : t -> int
        val length : t -> second
        val mul : t -> t -> t
        val div : t -> t -> t
        val make : int -> int -> second -> t
        val lmake : ?hour:int -> ?minute:int -> ?second:second -> unit -> t
        val hour : int -> t
        val minute : int -> t
        val second : second -> t
        val to_seconds : t -> second
        val to_minutes : t -> float
        val to_hours : t -> float
      end
    val add : t -> Period.t -> t
    val sub : t -> t -> Period.t
    val rem : t -> Period.t -> t
    val next : t -> field -> t
    val prev : t -> field -> t
  end
module Ftime :
  sig
    type t = CalendarLib.Ftime.t
    type field = [ `Hour | `Minute | `Second ]
    type second = float
    module Second :
      sig
        type t = second
        val from_int : int -> t
        val from_float : float -> t
        val to_int : t -> int
        val to_float : t -> float
      end
    val make : int -> int -> second -> t
    val lmake : ?hour:int -> ?minute:int -> ?second:second -> unit -> t
    val now : unit -> t
    val midnight : unit -> t
    val midday : unit -> t
    val convert : t -> Time_Zone.t -> Time_Zone.t -> t
    val from_gmt : t -> t
    val to_gmt : t -> t
    val normalize : t -> t * int
    val hour : t -> int
    val minute : t -> int
    val second : t -> second
    val to_seconds : t -> second
    val to_minutes : t -> float
    val to_hours : t -> float
    val equal : t -> t -> bool
    val compare : t -> t -> int
    val hash : t -> int
    val is_pm : t -> bool
    val is_am : t -> bool
    val from_seconds : second -> t
    val from_minutes : float -> t
    val from_hours : float -> t
    module Period :
      sig
        type t = CalendarLib.Ftime.Period.t
        val empty : t
        val add : t -> t -> t
        val sub : t -> t -> t
        val opp : t -> t
        val equal : t -> t -> bool
        val compare : t -> t -> int
        val hash : t -> int
        val length : t -> second
        val mul : t -> t -> t
        val div : t -> t -> t
        val make : int -> int -> second -> t
        val lmake : ?hour:int -> ?minute:int -> ?second:second -> unit -> t
        val hour : int -> t
        val minute : int -> t
        val second : second -> t
        val to_seconds : t -> second
        val to_minutes : t -> float
        val to_hours : t -> float
      end
    val add : t -> Period.t -> t
    val sub : t -> t -> Period.t
    val rem : t -> Period.t -> t
    val next : t -> field -> t
    val prev : t -> field -> t
  end
module Date :
  sig
    type t = CalendarLib.Date.t
    type day = CalendarLib.Date.day = Sun | Mon | Tue | Wed | Thu | Fri | Sat
    type month =
      CalendarLib.Date.month =
        Jan
      | Feb
      | Mar
      | Apr
      | May
      | Jun
      | Jul
      | Aug
      | Sep
      | Oct
      | Nov
      | Dec
    type year = int
    type field = [ `Day | `Month | `Week | `Year ]
    exception Out_of_bounds
    exception Undefined
    val make : year -> int -> int -> t
    val lmake : year:year -> ?month:int -> ?day:int -> unit -> t
    val today : unit -> t
    val from_jd : int -> t
    val from_mjd : int -> t
    val from_day_of_year : year -> int -> t
    val days_in_month : t -> int
    val day_of_week : t -> day
    val day_of_month : t -> int
    val day_of_year : t -> int
    val week : t -> int
    val month : t -> month
    val year : t -> year
    val to_jd : t -> int
    val to_mjd : t -> int
    val equal : t -> t -> bool
    val compare : t -> t -> int
    val hash : t -> int
    val is_valid_date : year -> int -> int -> bool
    val is_leap_day : t -> bool
    val is_gregorian : t -> bool
    val is_julian : t -> bool
    val to_unixtm : t -> Unix.tm
    val from_unixtm : Unix.tm -> t
    val to_unixfloat : t -> float
    val from_unixfloat : float -> t
    val to_business : t -> year * int * day
    val from_business : year -> int -> day -> t
    val int_of_day : day -> int
    val day_of_int : int -> day
    val int_of_month : month -> int
    val month_of_int : int -> month
    module Period :
      sig
        type t = CalendarLib.Date.Period.t
        val empty : t
        val add : t -> t -> t
        val sub : t -> t -> t
        val opp : t -> t
        val equal : t -> t -> bool
        val compare : t -> t -> int
        val hash : t -> int
        val make : int -> int -> int -> t
        val lmake : ?year:int -> ?month:int -> ?day:int -> unit -> t
        val year : int -> t
        val month : int -> t
        val week : int -> t
        val day : int -> t
        exception Not_computable
        val nb_days : t -> int
        val ymd : t -> int * int * int
      end
    val add : t -> Period.t -> t
    val sub : t -> t -> Period.t
    val rem : t -> Period.t -> t
    val next : t -> field -> t
    val prev : t -> field -> t
    val is_leap_year : year -> bool
    val same_calendar : year -> year -> bool
    val days_in_year : ?month:month -> year -> int
    val weeks_in_year : year -> int
    val week_first_last : int -> year -> t * t
    val nth_weekday_of_month : year -> month -> day -> int -> t
    val century : year -> int
    val millenium : year -> int
    val solar_number : year -> int
    val indiction : year -> int
    val golden_number : year -> int
    val epact : year -> int
    val easter : year -> t
    val carnaval : year -> t
    val mardi_gras : year -> t
    val ash : year -> t
    val palm : year -> t
    val easter_friday : year -> t
    val easter_saturday : year -> t
    val easter_monday : year -> t
    val ascension : year -> t
    val withsunday : year -> t
    val withmonday : year -> t
    val corpus_christi : year -> t
  end
module Calendar_builder :
  sig
    module