Description: 曆法是一種用來計算時間，特別是用來確定季節的系統。曆法通常以日、周、月和年為單位。它是一個基於天體（月亮、太陽、恆星）週期性運動的抽象系統。曆法自古就有。月亮和太陽這兩個天體有著很容易識別的週期性運動。於是，人們隨著日、周、月和季節的流逝，可以感受到明顯的變化。曆法既可以基於月相週期（即陰曆），也可以基於太陽年（即陽曆），還可以在陰曆中增加一些天數以與太陽年相匹配（即陰陽曆）。世界各地的歷法種類繁多，源自當地的天文學傳統。

Related Terms:

• Lunar Phase
• Seasons
• 年

Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

This is an automated transliteration of the simplified Chinese translation of this term

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