if I was born July 7th 1959 at 7 p.m. what are my four pillars signs

Your year pillar is Yi and your month pillar is Hai.

Hi Grace
1959 is the year of yin earth (heavenly) and yin water (earthly). The month is yang metal (heavenly) and yang fire (earthly). The day is yang metal (heavenly) and yang wood (earthly). 7 pm is 1700 - 1900 the hour of the rooster or yin water (heavenly and yin metal (earthly).
Heavenly :Year = Yin Earth, month = Yang Metal, Day = Yang Metal and hour = Yin Water
Earthly : Year = Yin Water, month = Yang Fire, Day = Yang Wood, hour = Yin Metal
So you are a yang metal person with two romance stars namely, yang fire (horse, which is the peak of summer and yin metal (rooster which is the peak of autumn).