Tìm hiểu các phần được chiếu sáng của mặt trăng trong thời kỳ trăng thượng huyền và hạ huyền. Nhớ quy luật C, O, D. Tìm hiểu thời gian mặt trăng mọc và lặn.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
In opposition to the moon in the Northern Hemisphere, the moon in the Southern Hemisphere will illuminate from left to right, become full, and then diminish from left to right.  A moon that’s illuminated on the left side is waxing, while a moon that’s illuminated on the right side is waning.  Hold out your right hand with your thumb out, palm facing the sky. The thumb and forefingers make a curve like a backward C. If the moon fits in this curve, it's a waning moon (decreasing). If you do the sa