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Notice: error_log(): write of 114 bytes failed with errno=28 No space left on device in /www/wwwroot/seo-dashuju-wenxue/code/logginfo/SimpleLogger.php on line 199 常识“四分历”是什么意思，起源、典故、生平简介及释义-历史文化
日，故称“四分”。一朔望月为
日，以四章七十六年为一循环，谓之一蔀；日之干支以八十章一千五百二十年为一循环，谓之一纪。以庚申为元，始用斗分，而冬至在牵牛之成法遂废。首创二十四节气昏旦中星，昼夜漏刻和晷影长度的计算，黄赤道度的变换等法，又计算出黄赤道交角为二十四度。表明古代历法已达较高的精度。