What is the correct JSON format to report "DateTime" property to IoT Central?

Question

Question 1: As titled. I was able to report Location property using Device Property library in the Property tab in Azure IoT Central, but cannot find the correct json format to report a DateTime property.

Here a copy of device twin I got back from IoT Central when I start my application:

"reported": {
  "location": {
    "lon": 120.567238,
    "lat": 36.044977
  },
  "timestamp": {
    "value": "2018-09-25T09:21:56Z"
  }
}

Question 2: Since I mentioned the Location property, is it also possible to report a Location without it being part of the Device Property library (as shown in the sample device templates)? Since a Location library already exist, it seems redundant create a Device Property to host the Location property. What is the difference between those two actions? Just FYI that I cannot find the correct JSON format to report for the Location property without it being under Device Property neither.

Answer 1

Question 1: The correct format to report DateTime is yyyy-MM-ddTHH:mm:ssZ (ISO 8601, in UTC). For example, 2018-11-26T8:08:08.808Z.

Question 2: There is a known issue for updating a Location property using the Flow connector. We are working on resolving this. Thanks for reporting.