class Time

def self.json_create(object)

See #as_json. 
def self.json_create(object)
  if usec = object.delete('u') # used to be tv_usec -> tv_nsec
    object['n'] = usec * 1000
  end
  at(object['s'], Rational(object['n'], 1000))
end

def as_json(*)


# => 2023-11-25 11:00:56.472846644 -0600
Time.json_create(x)

\Method +JSON.create+ deserializes such a hash, returning a \Time object:

# => {"json_class"=>"Time", "s"=>1700931656, "n"=>472846644}
x = Time.now.as_json
require 'json/add/time'

returning a 2-element hash representing +self+:
\Method Time#as_json serializes +self+,

see Marshal[https://docs.ruby-lang.org/en/master/Marshal.html].
to serialize and deserialize a \Time object;
Methods Time#as_json and +Time.json_create+ may be used 
def as_json(*)
  {
    JSON.create_id => self.class.name,
    's'            => tv_sec,
    'n'            => tv_nsec,
  }
end

def to_json(*args)


{"json_class":"Time","s":1700931678,"n":980650786}

Output:

puts Time.now.to_json
require 'json/add/time'

Returns a JSON string representing +self+: 
def to_json(*args)
  as_json.to_json(*args)
end