private double findBidPriceAtTime(Date dateTime) {
		
		double price = 0.0;
		Order previousPrice = askList.get(FIRST_ELEMENT);
		
		for (Order bid : bidList) {
			if (bid.getDateTime().getTime() > dateTime.getTime()) {
				price = previousPrice.getPrice();
				break;
			} else {
				previousPrice = bid;
			}
		}
		
		return price;
	}