You are 21 years old if you were born on September 17, 2002.
You are 21 years 6 months, 1 week, and 4 days old or 258 months old or 1,123 weeks old or 7,863 days old or 188,712 hours old or 11,322,720 minutes old or 679,363,200 seconds old You were born on a Tuesday.