(** The EF (1962) temporal cycle, per Rubricae Generales 71-77 and 91. *)

open Colitur_kernel

(** RG 71: Advent I Sunday of the Advent opening in civil year [y]. *)
val advent_start : int -> Date.t

(** First day of the liturgical year opening in civil year [y]. Same as
    {!advent_start}. *)
val year_start : int -> Date.t

val season : Date.t -> Vocab_ef.season