What is a date range?
/ˈdeɪt ˌreɪndʒ/ a number of dates that includes a particular start and finish date and all dates in between: You can specify a date range when you search.
What is a date picker in UI?
Date pickers are UI patterns that allow users to choose a specific date, time, or combination of both–for example, selecting a date of birth. The purpose of these date pickers is to streamline date capture while ensuring format consistency.