24 Seasons – 4 Extinct Days and 4 Separation Days

立春    lì chūn
雨水    yǔ shuǐ
惊蛰    jīng zhé
春分    chūn fēn
清明    qīng míng
谷雨    gǔ yǔ
立夏    lì xià
小满    xiǎo mǎn
芒种    máng zhǒng
夏至    xià zhì
小暑    xiǎo shǔ
大暑    dà shǔ
立秋    lì qiū
处暑    chù shǔ
白露    bái lù
秋分    qiū fēn
寒露    hán lù
霜降    shuāng jiàng
立冬    lì dōng
小雪    xiǎo xuě
大雪    dà xuě
冬至    dōng zhì
小寒    xiǎo hán
大寒    dà hán

Four Extinct Days （四绝日）is one day before 立春 lì chūn, 立夏 lì xià , 立秋 lì qiū, 立冬 lì dōng. Fall on February 3, May 5, August 8 and November 7. There might be some +/- depending on the season (节气) for each year. These days should not be used for important personal activities or endeavors. Because the Qi (气) phrase is very weak or almost extinct on these days. Extinct means ‘to end’.

Activities that are undertaken on any of the Four Extinct Days will be doomed from the start and can only go down. The Four Extinct Days are not good days to use for any activity that involves growth or advancement such as marriage or important business transactions or contracts.

Four Separation Days （四离日）is one day before 春分 chūn fēn, 夏至 xià zhì, 秋分 qiū fēn , 冬至 dōng zhì. Fall on March 20, June 20, September 22 and December 21. There might be some +/- depending on the season (节气).

These days should not be used for any important personal activities or endeavors. But can be used for commencement of legal separation action or to end a relationship / harassment.