36     rnf (ModifiedJulianDay d) = rnf d  function
39     rnf (ModJulianDate d) = rnf d  function
42     rnf d = d `seq` ()  function
45     rnf d = d `seq` ()  function
48     rnf (UTCTime d t) = rnf d `seq` rnf t  function
51     rnf d = d `seq` ()  function
54     rnf (LocalTime d tod) = rnf d `seq` rnf tod  function
57     rnf (ZonedTime lt tz) = rnf lt `seq` rnf tz  function
60     rnf (TimeOfDay h m s) = rnf h `seq` rnf m `seq` rnf s  function
63     rnf (TimeZone a b c) = rnf a `seq` rnf b `seq` rnf c  function
104     rnf !_ = ()  function
107     rnf (CalendarDiffTime x y) = rnf x `seq` rnf y  function
110     rnf (CalendarDiffDays x y) = rnf x `seq` rnf y  function
131     rnf (MkMonth m) = rnf m  function
151     rnf Q1 = ()  function
152     rnf Q2 = ()  function
153     rnf Q3 = ()  function
154     rnf Q4 = ()  function
157     rnf (MkQuarter m) = rnf m  function