I have not entered Julie's Part Time job income, her distribution received yearly, and interest on a bank account. I need to finish this tonight (4/13/17) Or by 8am CST

Or finish by 8am CST. If not, I guess I will have to file an extension. When an extension is filed I will be penalized, correct? I believe I have until the 18th of April to file since we should receive a refund, correct?