Setting the date on a Vizio smart TV is a simple process that can be done in a few steps. First, you will need to find the date and time on your Vizio smart TV. Next, you will need to find the calendar app on your Vizio smart TV. Finally, you will need to input the date and time into the calendar app and click on the “set as default” button. Once these steps are completed, your Vizio smart TV will have its new default date and time set.