code: @Override
  	public long getModTime()
  	{
  		HTTPSeekableLineReader reader = null;
  		SimpleDateFormat lastModFormat = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss zzz", Locale.ENGLISH);
  	
  		try {
  			reader = get();
  			String result = reader.getHeaderValue(HTTPSeekableLineReader.LAST_MODIFIED);
  			Date date = lastModFormat.parse(result);
  			return date.getTime();
  		
  		} catch (Exception e) {
  			e.printStackTrace();
  		} finally {
  			if (reader != null) {
  				try {
  					reader.close();
  				} catch (IOException e) {
  
  				}
  			}
  		}
  		
  		return 0;
  	}
docs: /* (non-Javadoc)
  @see org.archive.util.binsearch.impl.HTTPSeekableLineReaderFactory#getModTime()