Temporal.json

{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "id": "http://raw.githubusercontent.com/peterataylor/om-json/master/Temporal.json",
  "title": "Temporal",
  "description": "Temporal objects",
  "definitions": {
    "date-time": {
      "title": "date-time",
      "type": "string",
      "pattern": "^([\\+-]?\\d{4}(?!\\d{2}\\b))((-?)((0[1-9]|1[0-2])(\\3([12]\\d|0[1-9]|3[01]))?|W([0-4]\\d|5[0-2])(-?[1-7])?|(00[1-9]|0[1-9]\\d|[12]\\d{2}|3([0-5]\\d|6[1-6])))([T\\s]((([01]\\d|2[0-3])((:?)[0-5]\\d)?|24\\:?00)([\\.,]\\d+(?!:))?)?(\\17[0-5]\\d([\\.,]\\d+)?)?([zZ]|([\\+-])([01]\\d|2[0-3]):?([0-5]\\d)?)?)?)?$"
    },
    "date": {
      "title": "date",
      "type": "string",
      "pattern": "^([1-9][0-9]{3,}|0[0-9]{3})-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[01])(Z|(\\+|-)((0[0-9]|1[0-3]):[0-5][0-9]|14:00))?$"
    },
    "g-year-month": {
      "title": "g-year-month",
      "type": "string",
      "pattern": "^([1-9][0-9]{3,}|0[0-9]{3})-(0[1-9]|1[0-2])(Z|(\\+|-)((0[0-9]|1[0-3]):[0-5][0-9]|14:00))?$"
    },
    "g-year": {
      "title": "g-year",
      "type": "string",
      "pattern": "^([1-9][0-9]{3,}|0[0-9]{3})(Z|(\\+|-)((0[0-9]|1[0-3]):[0-5][0-9]|14:00))?$"
    },
    "dateTimePosition": {
      "title": "dateTime",
      "oneOf": [
        { "$ref": "#/definitions/date-time" }
      ]
    },
    "dateTimeInstant": {
      "title": "dateTimeInstant",
      "type": "object",
      "properties": {
        "instant": { "$ref": "#/definitions/dateTimePosition" }
      },
      "required": [ "instant" ],
      "additionalProperties": false
    },
    "dateTimeInterval": { 
      "title": "dateTimeInterval", 
      "description": "A time period has a begin and end. Either may be omitted for a single-ended interval.",
      "type": "object",
      "properties": {
        "begin": { "$ref": "#/definitions/dateTimePosition" },
        "end":   { "$ref": "#/definitions/dateTimePosition" }
      }, 
      "additionalProperties": false
    },
    "temporalPrimitive": {
      "title": "temporalPrimitive",
      "oneOf": [
        { "$ref": "#/definitions/dateTimeInstant" },
        { "$ref": "#/definitions/dateTimeInterval"  } 
      ]   
    },
    "duration": {
      "title": "duration",
      "type": "string",
      "pattern": "-?P[0-9]+Y?([0-9]+M)?([0-9]+D)?(T([0-9]+H)?([0-9]+M)?([0-9]+(\\.[0-9]+)?S)?)?"
    },
    "temporalObject": {
      "title": "temporalObject",
      "oneOf": [
        { "$ref": "#/definitions/duration"        },
        { "$ref": "#/definitions/dateTimeInstant" },
        { "$ref": "#/definitions/dateTimeInterval"  } 
      ]
    }
  },
  "properties": {
        "time": { "$ref": "#/definitions/temporalObject" }        
  },
  "required": [ "time" ]
}