The Discworld Almanak: The Year of the Prawn

Blurb

The Discworld Almanak is a spin-off book from Terry Pratchett's Discworld novels, in a similar format to the Diaries and Nanny Ogg's Cookbook. It was written by Pratchett and Bernard Pearson and published in 2004.
The book takes the form of an almanac for the Discworld Year of the Prawn, and offers astrological predictions, and agricultural advice.
Like Nanny Ogg's Cookbook it is enlivened by a series of "pinned on" notes between the publisher and the head printer. These include the revelation that the horoscopes are actually written by the God of Astrology