Almost everything about Calendars are thoroughly explained, including the traditional Chinese Lunar Calendar in wikipedia. I don’t frequently visit wikipedia myself (thank you GFW), and I was kinda surprised because, they even recorded the Chinese poem on solar terms. I tried damn hard to remember it when I was 7 years old, but the latter part still seems so strange to me, after 20 years you know. Though the poem was supposed to help memorizing the 24 solar terms, I found it more convenient to remember the 24 words one by one at that time. LOL

Autumnal equinox(aka. 秋分, in Chinese) is coming again on 23rd, Sep. So let’s enjoy the remaining days of summer sun shine.

PS: Oscar, remember we’d been discussing why there are two July(s) every 19yrs in Chinese Lunar? Here’s the simple calculation…

Basicly, different from pure lunar calendars(Jewish Calendar for example), Chinese Lunar Calendar is kinda "lunisolar", which means we compensate a month every 19yrs to re-align with season shifts. And why every 19 years?

1 lunar phase equals to 29.5306 days, while 1 tropical year equals to 12.368 lunar phases.
As 0.368 approximately equals to 1/2 or 1/3 or 3/8 or  4/11 or 7/19 or 46/125 ……etc(in form of X/Y), we should compensate a month every Y years, just after  X  lunar phases in that year.  Our ancestor chosed 7/19, i.e. X=7 and Y=19.

Actually, 19 tropical year equals to 6939.6018 days, and 19 Chinese lunar year plus an extra lunar phase equals to  6939.6910 days.
That’s a error rate of about 0.0013 percent. Really amazing.