The way NinjaTrader 7 operates internally means that the data settings will be different for each user and their timezone.
Remember you do not even need to touch the NinjaTrader 7 Historical Data Importer when you purchase NT 7 or 8 ready-formatted data from the PortaraNinja shop. However, for those of you with your own asci csv ot txt data this discussion may prove informative. Watch how Portara and NinjaTrader handle DST and dual DST differences (for overseas markets) in unison. See the database change based on your current location.