Almanach Cracoviense ad annum 1474
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Almanach Cracoviense ad annum 1474 (also known as the Calendarium Cracoviense), published in 1473, is the oldest known document to be printed in Poland. This incunabulum is a single-sheet astronomical calendar for the year 1474. It was published in Kraków by Kasper Straube, a travelling Bavarian printer who worked in that city between 1473 and 1476.
Like other almanacs and calendars of its day, the Almanach lists Church holidays and astronomical data, including planetary oppositions and conjuctions. It also provides medical advice, listing the best days for bloodletting depending on the age and illness of the patient.
The only surviving copy measures 37 cm by 26.2 cm and is part of the collection of the Jagiellonian University library.