{
  "package" : "hl7.fhir.r4.core@4.0.1",
  "definition" : "Easter Sunday.  The Easter date is a rather complex calculation based on Astronomical tables describing full moon dates.  Details can be found at [http://www.assa.org.au/edm.html, and http://aa.usno.navy.mil/AA/faq/docs/easter.html].  Note that the Christian Orthodox Holidays are based on the Julian calendar.",
  "system" : "http://terminology.hl7.org/CodeSystem/v3-GTSAbbreviation",
  "property" : [ {
    "_uri" : "http://hl7.org/fhir/concept-properties#parent",
    "code" : "parent",
    "_implicit" : true,
    "valueCode" : "_GTSAbbreviationHolidaysChristianRoman"
  } ],
  "codesystem" : "c7fa2765-e622-5403-aaec-723ab269b52c",
  "concept_id" : "e7e78c05-ff5c-5cc6-a08d-394c19757a7a",
  "ancestors" : {
    "JH" : 2,
    "JHCHREAS" : 0,
    "_GTSAbbreviationHolidaysChristianRoman" : 1
  },
  "id" : "208a5cf4-be23-42bc-90c9-352a8898e24f",
  "code" : "JHCHREAS",
  "display" : "JHCHREAS",
  "version" : "2018-08-12"
}