Omg. No. Stop.Guys
MBTI is unproven, not validated scientifically, so you are on pretty thin Ice. I ran a nationally representive sample and had the largest number of unclassifiable people I've come across.
Astrology is not about date of birth, it factors in Date, time and place. Which make even identical twins uneque from each other (they can't be born at exactly the same moment). Those data are fed through astronmic data to give exact locations of 10 planets (Sun, Moon, Merucury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto, Node and Asc, MC/IC), thats a lot of data from just time place and date. So two people born on the 1st of January, 1980 20 minutes apart can have different life events. They will be very similar, have similar life events but can be experienced very differently.
I know someone who was born within 5 minutes of me in Guatamala, the similarities of major life events were uncanny. His mum died within weeks of my dad, and vice versa for my Mum to his dad. In 2003 I got broken into 3 times in London, he got broken into within that same time period too. His chart isn't exactly the same because of the locational differences, and the impact they have on his chart, but the events are same. We both also spent time unemployed that summer - more or less at the same time.