The wedding begins at 16:00 Stockholm time. (Click here for a time zone converter.)
Watch the wedding live:
Broadcast starts at 15:00.
Those that can't watch live might want to check SVT after the fact, as they have offered playback in the past.
TV4 - Swedish
TV4 - Swedish
(Links may be changed as broadcasts begin. For those asking, I do not know of any outlet offering English translation/commentary.)
Me, I plan on tweeting (@orderofsplendors) and will of course be checking in here.
Enjoy!