You are 45 years old if you were born on December 15, 1978.
You are 45 years 4 months, 1 week, and 3 days old or 544 months old or 2,366 weeks old or 16,568 days old or 397,632 hours old or 23,857,920 minutes old or 1,431,475,200 seconds old You were born on a Friday.