You are 45 years old if you were born on July 21, 1978.
You are 45 years 9 months, 1 week, and 3 days old or 550 months old or 2,388 weeks old or 16,721 days old or 401,304 hours old or 24,078,240 minutes old or 1,444,694,400 seconds old You were born on a Friday.