If you were born on November 6, 1981 , then in 1987 your age depended on the exact date:

  • Before November 6, 1987 → you were 5 years old
  • On or after November 6, 1987 → you turned 6 years old

Quick way to see it

  • 1987 − 1981 = 6
  • But since your birthday is late in the year (Nov 6), you wouldn’t reach 6 until that date.

So for most of 1987, you were 5—and then celebrated your 6th birthday in November.