[
  {
    "timestamp": "AAA",
    "validity": "invalid"
  },
  {
    "timestamp": "2000",
    "validity": "invalid"
  },
  {
    "timestamp": "2000-01-01T00:00:00",
    "validity": "permissive"
  },
  {
    "timestamp": "2000-01-01T00:00:00Z",
    "validity": "strict"
  },
  {
    "timestamp": "2000-01-01T00:00:00+02:00",
    "validity": "strict"
  }
]