{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://rig.works/schemas/rig.calendar.span.schema.json",
  "title": "rig.calendar.span",
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "startDate": {
      "type": "string",
      "pattern": "^[0-9]{4}-[0-9]{2}-[0-9]{2}$",
      "description": "ISO 8601 calendar date."
    },
    "endDate": {
      "type": "string",
      "pattern": "^[0-9]{4}-[0-9]{2}-[0-9]{2}$",
      "description": "ISO 8601 calendar date."
    }
  },
  "required": [
    "startDate",
    "endDate"
  ]
}