The dates on two of the letters found on Daevorn are wierd. One is even downright impossible. - One of the letters is dated 1370, while the game takes place in 1368. - One other letter (the one describing that Sarevok has installed Tazok as bandit leader) is dated Flamerule 1368. In my current game it's 2 Flamerule 1368 (after 62 gamedays) right after killing him.
It's funny how i never noticed this in the original game... anyway, I reckon it's an oversight on the original dev's part that's just never been fixed?