《晋书·志·第八章》
推算甲子作为上元，到泰始十年，即甲午年，共九万七千四百一十一年，上元天正甲子朔夜半冬至，太阳、月亮、五大行星从星纪开始，得到上元之首的开端。
推甲子为上元，至泰始十年，岁在甲午，九万七千四百一十一岁，上元天正甲子朔夜半冬至，日月五星始于星纪，得元首之端。
The Jiazi was calculated as the Shangyuan, and the ninth year of the Taishi year, that is, the Jiawu year, was 97,411 years. The Shangyuan Tianzheng Jiazi Dynasty was a midnight winter solstice. The sun, moon, and five major planets started from Xingji, and the beginning of the Shangyuan was obtained.