Learn one Chinese Character a day - "月"

Today we learn another Pictographs character "月". As usual, we see whether we can guess its meaning from the evolution history (http://www.vividict.com).

Learn one Chinese Character a day - "月"

Oracle script of "月" is . it is composed of a semi-circular object () with some darkness inside. Bronze script is more close to the actual image of the object. You might already know its meaning, I show a picture of the meaning of this Chinese character  below -

月 - the moon

So "月" means Moon.
As "月" changed from full moon to full moon again, it is one Month in Chinese Lunar Calendar. "月" also means Month. 

Although "月" is full and bright sometimes, most of the time it is semi-circular. That is the unique outlook of moon compared to other stars or sun in the sky. Chinese ancestors observed this characteristics of moon and draw  to represent it.
Seal script of  "月" -  changed a lot and it followed actutally another Oracle script of  "月" - . When it came to Clerical script (http://en.wikipedia.org/wiki/Clerical_script) , it is close to what we are using now.

Please note that I translate 隶书 to Official script, which is NOT correct. Its English translation is Clerical script.

let's end our today's learning by enjoying a Chinese calligraphy art with "月" included:

人有悲欢离合，月有阴晴圆缺，此事古难全

As we have already learnt "月" and "日", what will be the meaning of "明"?