{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Calendar Entry",
  "description": "Entry in triodion, pentecostarion, or menaion",
  "type": "object",
  "required": ["id"],
  "properties": {
    "id": {
      "type": "string",
      "description": "Commemoration ID (CId)"
    }
  },
  "additionalProperties": false
}