You are 75 years old if you were born on December 9, 1948.
You are 75 years 3 months, 2 weeks, and 5 days old or 903 months old or 3,929 weeks old or 27,503 days old or 660,072 hours old or 39,604,320 minutes old or 2,376,259,200 seconds old You were born on a Thursday.