TurboTaxRachelW originally responded and then deleted, "The banking system is closed so you will need to use 4/16/19 as your payment date. By e-filing today (by midnight), your return will be filed on time." I filed and used the 4/16/19 date as the payment date based on that before MichaelL1's response. Should I try to pay on the IRS site? I don't see a way to cancel/change the 4/16 payment date though.