The Calculation of the Solar Year: A Scientific Approach to the Calculation of Sosigenes

This work aims to present a method for calculating the solar year without using computers or advanced maths. Calculating the solar year is a significant part of the development of calendar systems, especially considering the work of the ancient astronomer Sosigenes of Alexandria. Sosigenes is most notably credited with reforming the Egyptian calendar into the Julian calendar, which was introduced by Julius Caesar in 46 BCE.