anchor.diff:  
   [source,json]
   ----
  -"2016-10-04T08:17:19.633-04:00[America/New_York]"
  +"2018-01-19T08:30:19.937-05:00[America/New_York]"
   ----
   
   ==== ZoneOffset
  
positive.code: 
  [source,json]
  ----
  "2016-10-04T12:17:19.571Z"
  ----
  
  ==== LocalDate
  
negative.code: 
  [source,json]
  ----
  "2018-01-19T08:30:19.935-05:00"
  ----
  
  ==== OffsetTime
  
  [source,json]
  ----
  "08:30:19.935-05:00"
  ----
  
  ==== Period
  