{
  "title": "datetest",
  "description": "",
  "properties": {
    "start_date": {
      "type": "string",
      "title": "start date",
      "format": "date",
      "minimumDate": "today"
    },
    "the_not_date": {
      "type": "string",
      "title": "the NOT date"
    },
    "end_date": {
      "type": "string",
      "title": "end date",
      "format": "date",
      "minimumDate": "field:start_date,field:event_date"
    },
    "event_date": {
      "type": "string",
      "title": "event date",
      "format": "date",
      "minimumDate": "field:start_date"
    }
  },
  "required": []
}