The authentic method of eight-character numerology is the year pillar, the moon pillar, the sun pillar, and the hour pillar. Each column is a group of heavenly stems and earthly branches to express a concept of time. It can be easily calculated without the hour pillar. Still take the sun pillar as oneself, the year pillar represents ancestors or parents, the moon pillar represents friends or contemporaries, the sun branch represents the marriage palace, and the hour pillar generally represents descendants. Generally speaking, horoscope numerology requires you to know your birth time, which must be the Gregorian or lunar calendar. It must be noted and cannot be careless. How do you calculate it if you don't indicate it? All I know is that you were born in 1987, your year column is Ding Mao, and your zodiac sign is Rabbit. He is 22 years old this year. I dare not look at others, please forgive me.