十二辰，是中國古人將星空十二等分自東向西配以子丑寅卯十二支，其順序正好和十二次相反。十二辰和北斗七星運行方向相同（恆星實際上不動，是地球移動引發的視覺運動），和行星的視覺運行方向相逆。吳宇虹認為古人是按照北斗七星的運行方向排序十二辰[1]。
參見
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