How do i change the file date to extend past April 15?

[MayaD]

You don't change your filing date. You have until July 15th to submit your federal return and to pay the amount you owe. However you need to check your state website to confirm the filing date has been extended. 

You can not change the payment date after filing your return.  Federal Tax direct debit payments can be canceled up to 48 hours (midnight, Eastern time) before the date you designated the funds to be debited. To cancel your direct debit transaction, call (888) 353-4537.

For your State direct debit payment you would need to contact your State directly to see if you can change the date or cancel the transaction.