Knight sacrifice: was it good or was it lucky?

I'm posting this game I just played.

There are two very interesting moves on it:

a) a bishop sacrifice (20.Bxf7+) refused, which was expected

and

b) a knight sacrifice (24.Nxd6). This one I made because I was getting very short on time and I wanted to simplify the game, open up the position and ... try not to lose on time.

I did not think much about it, I threw myself into it. It worked well, as the game ended shortly thereafter.
I'd like to know your opinion and comments about this sacrifice.

cool game

There were probarly better moves than 24. Nxd6 but if you were running out of time it was a decent trade as it really made the situation much easier and faster to play in.

Looks good to me, especially under time constraints.