class DateUtils2 {

	public long expireAtHour(int addHour, int atMin) {
		long curTime = System.currentTimeMillis();
		Calendar calendar = Calendar.getInstance();
		calendar.add(Calendar.HOUR_OF_DAY, addHour);
		calendar.set(Calendar.MINUTE, atMin);
		long result = (calendar.getTimeInMillis() - curTime) / 1000;
		return result;
	}

}