Schedule Script Date
Option here are Daily ( every day ), Specific Week Days, Specific Date.
Daily option is set by default.
By pressing the input field you will get a dropdown. You can choose each day only once. Once a day it's chosen it becomes grayed out in the dropdown.
Same as post/pages days are displayed and managed as tag blocks.
Besides weekdays you can choose a specific date when you want that script needs to be executed. Specific Dates will bring the calendar to choose the needed day.
Date range ( new feature )
In the previous version, you could select a specific date. Now it's possible to select from to data when the script needs to be executed.