Date manipulation refers to the process of changing, formatting, or calculating dates in various applications. This can involve adding or subtracting days, months, or years, as well as converting dates from one format to another. It is commonly used in programming, data analysis, and database management to ensure accurate time-related data handling. In many programming languages, libraries or functions are available to facilitate date manipulation. For example, Python has the datetime module, which allows users to easily perform operations like finding the difference between two dates or formatting a date for display. Proper date manipulation is essential for tasks such as scheduling, reporting, and time tracking.