Congratulations on your first year.  For future reference, the IRS and all state agencies recognize the date and time that you transmit the return to Intuit servers as your submission time.  On deadline days, it is normal for the acceptance/rejection to take a little longer due to the volume of submissions hitting the agencies especially in the evenings.  When in doubt, you can always give us ProConnect support a call and we can check from our side for you as well to see if an update has come through.