Mail gem CEDT parse error

gistfile1.txt

require "mail"

mail = Mail.new do
  from     'me@test.lindsaar.net'
  to       'you@test.lindsaar.net'
  subject  'Here is the image you wanted'
  date     '06-Jul-2016 09:32:29 CEDT'
end

puts mail.date #2016-07-06T09:32:29+00:00
mail.date = Time.parse( mail["Date"].instance_variable_get("@value"))
puts "###### HACK"
puts mail.date