Find the exact date that is 21 days from now and 21 days ago, including the day of the week.
This page adds 21 days to today's date using JavaScript's Date object. The calculation correctly handles month boundaries, varying month lengths (28-31 days), and leap years. The "days ago" result subtracts 21 days from today.
21 days is equal to 3 weeks, or 504 hours, or 30,240 minutes.