calendrical calculations meaning in Chinese

日期

I have included an example of a security light controller that runs to the schedule " turn the lights on 15 minutes before sunset . " the implementation uses the calendrical calculations software package see
）中，我加入了一个安全灯控制器的例子，它按“在日落之前15分钟开灯”这一计划运行。
Via calendrical calculations the sacrificial system of king diyi and that of king dixin are connected , and it can be concluded that king diyi might have reigned for 21 , 26 or 31 years , of which 26 years being the most probable
采用历日计算的方法，将帝乙祀谱与帝辛祀谱进行连接，指出帝乙可能的在位年数为21年、 26年、 31年，以26年为好。