private static Date parseDate(String asOfStr) throws WeiboException {
		Date parsed;
		if (asOfStr.length() == 10) {
			parsed = new Date(Long.parseLong(asOfStr) * 1000);
		} else {
			parsed = WeiboResponse.parseDate(asOfStr,
					"EEE, d MMM yyyy HH:mm:ss z");
		}
		return parsed;
	}