Neutral date-time
The date is exported with the time zone of the user.
* 
The time is always the same, the time zone is different (based on the user time zone).
Web service input user 1
2015-10-21T10:00:00
Web service reply user 1
2015-10-21T10:00:00.000 -10:00 (The date is returned in the user’s time zone)
User interface displays to user 1 and user 2
2015-10-21 10:00