the lunar calendar

基本解释

What's the date of May Day according to the lunar calendar this year?
今年五一是隂歷幾號？
In the lunar calendar, the years are designated by the Heavenly Stems and Earthly Branches.
隂歷用乾支紀年。
《新英漢大辤典》
OTHERWISE a bright, brash and sometimes stifling city, once every autumn—on the middle day of the eighth month of the lunar calendar—Seoul becomes a ghost town.
別看平常首爾是一個喧囂、快節奏甚至有時令人窒息的城市，可每年一到了隂歷八月十五，首爾一下子便冷清了下來。

It also abandoned the lunar calendar that had been used from ancient times.
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If you mine the newspaper archives for last year, or the year before (well, not exactly, you need for Chinese New Year, which being based on a lunar calendar is a movable feast) you will see many a story about how factories were desperately short of the labour they needed in the big Chinese manufacturing towns.
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