You are 21 years old if you were born on December 17, 2002.
You are 21 years 3 months, 1 week, and 4 days old or 255 months old or 1,110 weeks old or 7,772 days old or 186,528 hours old or 11,191,680 minutes old or 671,500,800 seconds old You were born on a Tuesday.