Take the Date you are Born
Multiply that by 4
Add 13 in the result
Now Multiply the result by 25
Subtract 200 from that.
Add the month you are born
Multiply the result by 2
Subtract 40 from that.
Multiply it by 50
Add last two digit of the year you are born.
Subtract 10500 from the result
Now see the magic
Sunny..