【How to Calculate Your Lucky Number】Break down the numbers of your birth date and keep adding them until they become a single digit. The final single-digit number you arrive at becomes your destiny number.

＜In the case of being born on October 30, 1987＞

1 + 9 + 8 + 7 + 1 + 0 + 3 + 0 = 29

2＋9＝11

1+1=2

The lucky number is "2".