Thanks to DarkUFO reader Achaeus for the following.
Season 6 will start airing in the Netherlands 3 days after the American airing. So the first 2 hours will air at friday 5 february at 10:30 PM on Net 5 (Net 5 is the network). The rest of the episodes will be airing every friday after the American airing (presumably also at 10.30 PM).
Great news for all the Dutch fans visiting your site!