Predict Bitcoin rates.
When is the best time to sell your Bitcoins? When can you buy them at lowest rates?
Bitcoin Clock will tell you!
From the current transactions and the latest trading results can calculate when that might be appropriate hours, repel your Bitcoin assets or increase your supply of digital money.
Wide hour sections mean high rates, while small hour parts indicate low rates.
Note that this is only rough recommendations based on average data. You are still responsible for your trading action. ;)