What function does the modification date serve for files on a computer?

The modification date of a file signifies the last time the file was altered. This timestamp is crucial for users who need to manage versions of documents or understand the recency of changes made to a file. By knowing when a file was last edited, individuals can ensure they are working with the most current version and can make informed decisions regarding file management, such as backups and collaborations. This information is essential for maintaining organized and updated files, especially in projects that involve multiple contributions or versions.