"Anyone hear of the missing day in the calender?"
Yes, I have. Have you heard that it's complete bullshit and nothing more than a religiously based urban legend?
"I read from NASA"
No, you didn't. You read no such thing from NASA. What you read was something from some bullshit fundamentalist site/book which claimed it's from NASA.
"that they were tryin to figure out the missing day, until someone mentioned about the day the earth stayed still in the bible for 23 hr and 20 min."
If you stop a fucking planet's rotation you end up with a smoldering cinder, not a "longer day".
"The other 40 minutes was when GOD rotated the sun backwards 10 degrees which was the other 40 minutes and this was in Joshua's time."
Have you any idea the amount of problems that would be caused by moving the fucking sun?
"What do you think of this discovery?"
I think it's not a discovery. I think it's complete and utter bullshit that you've swallowed because it not only seems to confirm a deeply held, though unsubstantiated belief, that you have but also because you don't have the slightest idea what would actually happen should your little story be true.
"This is Nasa's explanation of the bible being TRUE."
I'm pretty sure even NASA was tired of this one and made some sort of official or unofficial statement in regards to this. In short, they said they'd never done any such thing.
"If its an urban legend who cares. God could do anything with his power."
If you're going to believe it anyway why make a big deal about NASA finding a "lost day"?
"There are other stories that show the bible is true this is just one. Rainbow is God's promise not to flood the earth again, to me seems everyone is in denile."
A rainbow is light refracting through moisture in the atmosphere. They existed long before your god was dreamed up by, apparently, insane goat herders.
"To believe in God what is it going to hurt?"
Google "religiously motivated violence".
"You believe and its true you have eternal life in heaven...you don't believe and its true you have eternal life in hell burning and satan laughing at you that your a fool and you followed him and not God."
That's nice.
Now show evidence that god, Satan, heaven or hell exist. Show evidence a human soul exists. Show evidence this "soul" continues on after death. Show evidence that this soul will end up in either heaven or hell (after you've shown evidence for their existence, of course).
Good luck.
"It don't hurt to believe...I have faith and I have my own expierence that has made me believe he is out there."
How nice for you. Unfortunately, subjective experiences are not very convincing evidence for anyone other than the one experiencing it.