defmodule Timex.TimezoneInfo do
  @moduledoc """
  Complete definition of a time zone for a given period
  
  Notes:
    - `full_name` is the name of the zone, but does not indicate anything about the current period (i.e. CST vs CDT)
    - `abbreviation` is the abbreviated name for the zone in the current period, i.e. "America/Chicago" on 3/30/15 is "CDT"
    - `offset_std` is the offset in minutes from standard time for this period
    - `offset_utc` is the offset in minutes from UTC for this period
  Spec:
    - day_of_week: :sunday, :monday, :tuesday, etc
    - datetime:    {{year, month, day}, {hour, minute, second}}
    - `from`:      :min | :max | {day_of_week, datetime}, when this zone starts
    - `until`:     :min | :max | {day_of_week, datetime}, when this zone ends
  """
 
  defstruct full_name:        "UTC",
            abbreviation:     "UTC",
            offset_std:       0,
            offset_utc:       0,
            from:             :min,
            until:            :max
end