(.using
  [library
   [lux "*"
    [abstract
     [equivalence {"+" Equivalence}]
     [monad {"+" do}]]
    [control
     ["[0]" exception {"+" exception:}]
     ["<>" parser
      ["<[0]>" text]
      ["<[0]>" xml {"+" Parser}]]]
    [data
     [text
      ["%" format]]
     [format
      ["[0]" xml {"+" XML}]]]
    [time
     ["[0]" instant {"+" Instant}]]]]
  ["[0]" /// "_"
   ["[1][0]" time
    ["[1]/[0]" date]
    ["[1]/[0]" time]]])

(type: .public Time
  ///time.Time)

(def: .public equivalence
  (Equivalence Time)
  ///time.equivalence)

(def: separator
  ".")

(def: .public (format [date time])
  (%.Format Time)
  (%.format (///time/date.format date)
            ..separator
            (///time/time.format time)))

(def: .public parser
  (<text>.Parser Time)
  (do <>.monad
    [date ///time/date.parser
     _ (<text>.this ..separator)
     time ///time/time.parser]
    (in [date time])))