require 'pp'
class Time
  class << self
    alias_method :_original_load, :_load
    def _load(marshaled_time)
      time = _original_load(marshaled_time)
#      utc = time.send(:remove_instance_variable, '@marshal_with_utc_coercion')
      time
      # utc ? time.utc : time
    end
  end

  alias_method :_original_dump, :_dump
  def _dump(*args)
    obj = self.frozen? ? self.dup : self
    obj.instance_variable_set('@marshal_with_utc_coercion', utc?)
    obj._original_dump(*args)
  end
end

t = Time.local(2000).freeze
pp t
m = Marshal.dump t
pp t
t2 = Marshal.load(m)
pp t2