You receive a job offer letter. It says "Start date: 60 days from today." You need to know the exact calendar date. You could count on your fingers. You could write out a calendar. Or you could use a date calculator. A date calculator instantly answers these questions: How many days between two dates? What date is 45 days from today? How old am I based on my birth date? How many business days until the deadline? Date calculators are used constantly in everyday life: calculating age, tracking pregnancies, managing project deadlines, planning events, and understanding time intervals. In this comprehensive guide, we will explore what date calculators are, how they work, their accuracy, and how to use them correctly. 1. What is a Date Calculator? A date calculator is a tool that performs mathematical operations with dates. The Basic Concept You provide dates (or a date and a duration), and the calculator performs calculations: Days between: How many days from Date A to Date B? Ad...