Why is your question whether or not you'll go to hell? What is it that you've done that prompts the question? You've said you've lied but I don't understand how, exactly, this has happened in writing down T12 instead of the correct day code.
Are you a born-again child of God? Do you know you are? If so, how?
If you are a born-again child of God, why are you afraid of going to hell? Why would you think that after being adopted into God's family, He would kick you right out of it again?
1 John 4:16-19
16 So we have come to know and to believe the love that God has for us. God is love, and whoever abides in love abides in God, and God abides in him.
17 By this is love perfected with us, so that we may have confidence for the day of judgment, because as he is so also are we in this world.
18 There is no fear in love, but perfect love casts out fear. For fear has to do with punishment, and whoever fears has not been perfected in love.
19 We love because he first loved us.