I need some hints with a riddle

[johanesd]

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.

[plainglazed]

Don't know if this is still relevant but my first two thoughts when looking at this mix of seemingly unrelated characters is their keyboard position or the ascii representation of the characters; and then some kind of manipulation of one of those relative to the 81 or 08/01 clue.  Good luck.