Date display formats are not right across all the ESRI platforms. The default JSON format for a date time should be
{
"fieldName": "DATE_FIELD_NAME",
"visible": true,
"isEditable": true,
"label": "Date Field Name",
"format": {
"dateFormat": "shortDateLEShortTime",
"timezone": "utc"
}
},
almost every other system in the IT industry has this as the default.
Instead we get
{
"fieldName": "DATE_FIELD_NAME",
"visible": true,
"isEditable": true,
"label": "Date Field Name"
},
The default format is not specified and as a result is almost always forced into the American Date formats, it doesn't even conform with the ISO 8601 DATE AND TIME FORMAT