Your birth date means a lot. In a numerology chart, it's used to calculate your life path and several important cycles. (Your life path is the number 7.)

Your third pinnacle cycle (your third pinnacle cycle number is 3) started last year. It will last for 9 years.

Your second life period cycle (your second pinnacle cycle number is 5) started ten years ago. It will last for 27 years.

There are also yearly cycles, called personal years.

All those (and others) are calculated from your date of birth.

See the Cycles Based On Birth Date Numbers article for meanings of the cycles. The article contains links to interpretations and also to a calculator that reveals the calculations used to determine the numbers for the various cycles from your birth date.