程序将一年中的天数转换到相应的月份及日期。适用于TLE数据中的日期转换。程序不用if语句，简单易懂高效。输入参数可以是数组形式。-The program will convert the number of days in a year to the corresponding month and date. TLE data for the date conversion. Program without the if statement, straightforward and efficient. Input parameters may be matrix form.