Bitfinex
ExplanationExplanationChartbuddy provides a chart which shows the change of the market depth with time.
Chart shows the market depth for the last hour, the beginning of the hour at the back, latest time at the front. The bids (what people are willing to pay) stack up on the left and the asks (what people are wanting to get paid) stack up on the right.
A depth chart indicates how much it would conceivably take to shift the price. Note that orders can be cancelled so judgement should be applied. Large orders produce a large vertical part on the chart or a "wall". By watching how walls are added, moved or removed, it is possible to make a judgement of market sentiment (or arguably just observe attempts at market manipulation).
The large numbers at the top are the latest values for the closest bids and asks. The difference between these is the "spread".
World times are also listed for several major cities.