{
    "description": "schema for a ISO8061 date used in statements in the xAPI, version 1.0.*",
    "pattern": "^[+-]?(\\d\\d\\d\\d)(-)?(\\d\\d)(-)?(\\d\\d)(T)?(\\d\\d)(:)?(\\d\\d)(:)?(\\d\\d)(\\.\\d+)?(Z|([+-])(\\d\\d)(:)?(\\d\\d))?$",
    "type": "string"
}