Hi Master Cecil and Robert,  My Ba Zi is as follows (9th May 1979, 8:30am):  Year (Stem/Branch): Ji / Wei Month (Stem/Branch): Ji / Si  Day (Stem/Branch): Bing / Zi  Hour (Stem/Branch): Ren / Chen  Accordingly, my day master is Bing and since I am born in the summer season (Si), my chart is naturally hot and dry and my day master should be a strong fire day master. Water in this case will be a favorable element.  However, using the online ba zi calculator provided on this site, it determined that I am a weak fire day master instead, and that water is my most unfavorable element.   Could you kindly explain why this is the case?  Thank you very much for your assistance.