public static boolean isSameLocalTime(Calendar cal1, Calendar cal2) {
        if (cal1 == null || cal2 == null) {
            throw new IllegalArgumentException("The date must not be null");
        }
        return (cal1.get(Calendar.MILLISECOND) == cal2.get(Calendar.MILLISECOND) &&
                cal1.get(Calendar.SECOND) == cal2.get(Calendar.SECOND) &&
                cal1.get(Calendar.MINUTE) == cal2.get(Calendar.MINUTE) &&
                cal1.get(Calendar.HOUR) == cal2.get(Calendar.HOUR) &&
                cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR) &&
                cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) &&
                cal1.get(Calendar.ERA) == cal2.get(Calendar.ERA) &&
                cal1.getClass() == cal2.getClass());
    }