class DateUtils {

    public static Date getSomeHourOfDay(Date date, int offsetHour) {
        Calendar cal = Calendar.getInstance();

        cal.setTime(date);
        cal.set(Calendar.HOUR_OF_DAY, cal.get(Calendar.HOUR_OF_DAY) + offsetHour);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);

        return cal.getTime();
    }

    private  DateUtils();

}