sundatepicker/src/main/java/com/alirezaafkar/sundatepicker/components/JDF.java
public void previousDay(int days) {
        JDN -= days;
        JDNToIranian();
        JDNToJulian();
        JDNToGregorian();
    }
/**
     * previousDay: Overload the previousDay() method to accept the number of
     * days to go backward and adjusts the other dates accordingly.
     *
     * @param days int
     */
Overload the previousDay() method to accept the number of
days to go backward and adjusts the other dates accordingly.

@param days int
Overload the previousDay () method to accept the number of days to go backward and adjusts the other dates accordingly . @param days int
public void previousDay(int days) {
        JDN -= days;
        JDNToIranian();
        JDNToJulian();
        JDNToGregorian();
    }
public void previousDay ( int days ) { JDN -= days ; JDNToIranian ( ) ; JDNToJulian ( ) ; JDNToGregorian ( ) ; }
previousDay: Overload the previousDay() method to accept the number of
 days to go backward and adjusts the other dates accordingly.
previousDay : Overload the previousDay () method to accept the number of days to go backward and adjusts the other dates accordingly .