This incident took place a couple years ago, on the first day back to school for the kids, in September. I work nights and as I usually do, after I get the kids off to school in the morning, I go back to bed. My husband and I only have one vehicle, so I have to get up and go get him at lunchtime at his workplace, so we can go have lunch together. I usually set the alarm clock for 11 am, so I have time to get cleaned up, and head out to get him by noon.
Well, this particular morning, I did forget to set the alarm clock, I wasn't used to doing it since the kids were on summer break and I didn't need the car. I fell soundly asleep, an earthquake would not have woke me up! Then, I don't know where it came from or how, a very loud, raspy, sharp voice rang out, WAKE UP! I sprang out of that bed! I turned to look at that clock, and wouldn't you know, it was exactly 11 am! There was indeed a strange vibe about the room, and it did give me the creeps.
I have not forgot to set the alarm clock since then. I have told everyone I know about this. I'm not sure if they believe me or not, quite frankly, I don't care. I know I heard what I heard. This voice has come back at other times since then, I still don't know why, or who. At times, I welcome its existence.
It's not necessary that it was something paranormal or spiritual. It is our mind that can set an alarm in our mind for that particular time or that was in your habit to wake up that time.
It is also scientifically proved that if we will think that I want to wake up at a particular time so our mind can set an alarm of that. Even my brother don't set any kind of alarm but he wake up on the exact time on which he wants to.