hi, i am a man born on 14th feb 1985, hai time. which pillar is correct?

i've experienced the difference in plotting my chart. how to plot a "bazi chart?'' is it mainly based on our birthday, isn't it? is it the chinese calendar or the international calendar that we should be based on the chart plotting?
1st version : (yymmddhh) yi chou, wu yin, jia shen, yi hai
2nd version: (yymmddhh) jia zi, ding chou, jia shen, yi hai.
which one is correct? am i a strong day master? which element is my favourable? tq