So I've been trying to solve this riddle for about 6 hours now, and I still have no idea how to do it. "In August, the best of the year in USA, you realized that there’s a number so significant and leads to a lifetime experience: the fourth power of 3. Using August’s best times and your right hand, you wrote the following line (to be decoded by you): O N U X 1 9 ~ 7". I've looked into many things. My first guess was that some kind of event happened on august 1. I looked for that, but to no avail. I also thought that maybe it was something that happened in august 1981, but still, nothing. I am not asking for the solution. I just want some hint.