Calendar 1476

Johannes Regiomontanus's "Calendar" (1476) is a manuscript calendar that illustrates the complexity of astronomical calculations in the Renaissance. It features handwritten text and a diagram depicting a calendar system. This historical artifact is a testament to the mathematical and scientific achievements of the 15th century, demonstrating Regiomontanus's influential work in astronomy. The book's design highlights the importance of meticulous record-keeping and visual representation in scientific exploration.