function ISOStrToDateTime(const Value: String): DateTime
The ISOStrToDateTime function returns a date-time value for the ISO-8601-formatted date-time string input parameter. The return value is a DateTime value.
Examples
X := DateTimeToStr(ISOStrToDateTime('2015-08-15T16:40:31.601Z')); // X is '8/15/2015 12:40 PM'