Timestamps

{
  "created_at": "2020-09-01T21:28:29.000000+00:00",
  ...
}

All timestamps are returned in ISO 8601 format in UTC (YYYY-MM-DDTHH:MM:SS[.mmmmmm]+HH:MM). The fractional-seconds part (.mmmmmm) is optional — many responses omit it and return only whole seconds (e.g. 2021-01-09T01:33:15+00:00), so do not rely on it always being present. Timezone information is always present in the string, so you should take it into account.