It was between one and three o'clock in the afternoon on August 1 last year. And Weishi is in the four pillars, that is, the eight characters, and the heavenly stem is Ding, which is Dingweishi. Yi, Gui, Ding, and Ding are all cloudy stems, so they are yin years, yin months, yin days, and yin hours.
There are hundreds of thousands of combinations of yin years, yin months, yin days, and yin hours.