Instruct: Classify the given Amazon review as either positive or negative.
Query: At one time, sailors relied on almanacs for navigation...

But detailed data of tides and star positions have been eliminated from popular almanacs long ago.But they still supposed to be more than books of historic or trivial facts, but should present important, and timely, data at one's finger tip in order to help navigate through the difficulties of life.And once such piece of data, for me, was the current postal rates (or at least current at the time of printing.)I was shocked that such an important collection of data was not available in this book!Yeah, the Universal Declaration of Human Rights is an interesting and important document; but it was passed and promptly ignored by much of the "universe" over fifty years ago.If I have a package to send out, I want to know the cost NOW!On the other hand, purchasing this book IS a cheap way to truthfully claim that you have the Encyclopaedia Britannica...