Glossary term: 晝夜平分點
Description: 晝夜平分點（春分和秋分）是太陽在其年度黃道運行中穿越天球赤道的時刻。該詞源自拉丁語“aequinoctium”，其中“aequus”意為“相等”，“nox”（屬格形式為“noctis”）意為“夜晚”。在晝夜平分點這一天，不僅僅是接近赤道的區域，全球的晝夜長度大致相等。對於地球上的觀察者，太陽在這一天從正東方升起，沿著天球赤道的路徑運行，最後在正西方落下。每年有兩次晝夜平分點，春分大約在3月20日，秋分在9月23日。在3月的春分，太陽看起來開始向北半球移動；而在9月的秋分，太陽看起來則向南半球移動。
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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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