age                     Get age information from ID number
age_by_year             Get age information from ID number
birth_date              Get date of birth information from ID number
check_id                Check whether the ID number is valid
cnid_info               Get full information from ID number
convert18               Convert the 15 Digits ID Number to 18 Digits
cstl                    Get constellation information from ID number
gender                  Get gender information from ID number
leap_year               Calculate whether a given year is a leap year
mdays                   Calculate the number of days in a given year
                        and month
region                  Get region information from ID number
ydays                   Calculate the number of days in a given year
zodiac                  Get zodiac information from ID number
