I would feel scared finding that out, and honestly would probably rather not know because the weight of that knowledge would make me struggle to concentrate on the precious present moments I have left. I would only be intetested in knowing how and when i would die if I had the potential to avoid an untimely death by doing something differently, like not leaving the house on the day it was predicted that I would die in a car crash. If I knew my death was imminent, and the circumstances could not be altered then I would be depressed, but probably not change the way I live by that much, other than maybe spending some more time with loved ones since I won't be around for them much longer.
If my death was in the distant future, then after being initially shocked and unsettled by finding out the time and circumstance then I suppose the knowledge could be an impetus to accomplish more before that expiration date, but as the date drew nearer and imminent death became more tangible then I think the stress would drive me crazy, and I would be happier and live a more peaceful life not knowing precisely when of how my end is coming. You can live a rich and constructive life day by day by just remembering the principle that there is no guarantee of tomorrow, without implicitly knowing the very hour your shall come.