I rang the gong once and it granted health. I went back through my logs. I admit, I haven't looked at them until now, but it seem to show the date, time, and second it happened, except for this morning when I discovered this. I have an entire section of log that reads "Sun May 04 06:28:52 2008:". There are hundreds of entries made at this time, which was the time that I discovered this, but it was after that that I rang the gong.

If it would let me edit my original post I'd put in a {Spoiler} tag, as I didn't realise that it would lead to this when I first posted this, but alas, it will let me edit all posts except for the original one.