ALttP comes right after Ocarina of Time, followed by the GB (most likely) and NES ones. It comes less than half-way through the timeline, so it can't be considered to be one of the last ones.
Where'd you get this information about the Triforce becoming one again temporarily? I've never read anything like that, and I've been following the Zelda series since the NES games (although it's possible I've forgotten but I don't think so). Also, I'm not quite sure what you said the trigger was for the Triforce becoming one again (When the three who obtained a piece of the Triforce <do something> it becomes one again temporarily?).