Are dreams real

i was in a recent argument with someone who kept slandering my name, like accusing me of things i never done. mind you i woke up with a load knock at the door which made me angry for coming out of sleep i was into. i ask god to give me strength. so i sat back down in my chair to try to go back into the dream but it was unsuccessful. so i got back up and read the bible( psalm 53 chpt. and the 54 chpt, i then was able to go back to sleep with the bible lying on my chest. i had a vision? or a dream? of the meeting in full color and detail and everything that was going to be said.I always look at the clock whenever i go to sleep. i learned it was a hour that had went by .so i went to the meeting to discuss the issue and it was clear to me and conformation of the outcome of the discussion. in other words i dream of something in the future of the same day. time and hour .Is that really possible? is it because i went to sleep angry or mad?