《明史·志·卷十三》
余下的分化为秒，乘以一千，除以一百四十四，按六十进制为分，满一百分为一刻，就是初亏的时刻。
馀分通秒，以一千乘之，以一百四十四除之，以六十约之，满百为刻，为初亏时刻。
Convert the remaining fraction into seconds, multiply by one thousand, divide by one hundred forty-four, and convert to minutes according to the sexagesimal system. One hundred minutes make one 刻, which is the time of the initial eclipse.