Knjiga o kalendarima

Šikić begins with the Egyptian, Mesopotamian, and Chinese calendars, explaining their astronomical foundations and adaptations to agriculture. Special attention is paid to the Julian calendar and its shortcomings, which led to the reform and introduction of the Gregorian calendar in 1582, along with mathematical and astronomical calculations that enabled more precise tracking of the years.

Šikić also analyzes other systems, such as the Jewish, Islamic, and Indian calendars, emphasizing their specificities and the influence of religion on their development. The book also touches on practical aspects, such as calculating the date of Easter, and the problem of transition between calendars in different cultures. The author uses an interdisciplinary approach, combining mathematics, astronomy, history, and anthropology, thus providing the reader with a comprehensive insight into the complexity of time measurement.

Particular emphasis is placed on the role of calendars in shaping social norms, rituals, and economic activities. Šikić also discusses modern challenges, such as the need for a globally harmonized calendar. The book is written in accessible language, with plenty of examples and illustrations, which makes it interesting for a wide audience – from scientists to history buffs.