On August 28, 2008, why is the moon column C instead of E?

It's the eighth day after the cold dew in Wu Geng on August 28th, so it's the third day in September.

1990 10/6, a stranger was born in an ugly era:

Gregorian calendar: Wu Geng, Xu Bing, Jiayin and Ugly.

Lunar calendar: Geng Wu, Bing Xu, Xin Wei, Ugly.

Because it is not clear that the time you display is Gregorian calendar, the two are arranged together.