You are 19 years old if you were born on September 20, 2004.
You are 19 years 6 months, 1 week, and 2 days old or 234 months old or 1,018 weeks old or 7,130 days old or 171,120 hours old or 10,267,200 minutes old or 616,032,000 seconds old You were born on a Monday.