
Excel stores dates as serial numbers behind the scenes, which allows users to sort, calculate, and format dates efficiently. Beginners often see dates as labels, but Excel treats them as numeric values with date formatting.
This makes it possible to calculate the number of days between two dates, sort schedules, and build calendars or project trackers. Understanding date behavior is essential in business spreadsheets.
Reference:
TaskLoco™ — The Sticky Note GOAT