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

10 July 2025, Version 1
Working Paper
This content is an early or alternative research output and has not been peer-reviewed by Cambridge University Press at the time of posting.

Abstract

The obelisk of Alexandria played a significant role in the history of astronomy and the calculation of the solar year. While Sosigenes's work in reforming the Roman calendar is often highlighted about the solar year, the obelisks of Egypt and their use in astronomical observations provide valuable insight into ancient methods of timekeeping and understanding the solar cycle.

Keywords

Obelisks
Sosigenes
Solar year
Equinoxes and Solstices
Vatican Obelisk
Sundials

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Comment number 1, Sotiris Sofias: Jul 16, 2025, 17:38

In Figure 4, the correct date is 52 B.C. and not 46 B.C

Version History

Jul 10, 2025 Version 1

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License

All Rights Reserved

DOI

10.33774/coe-2025-v6m84
D O I: 10.33774/coe-2025-v6m84 [opens in a new tab]

Author’s competing interest statement

The author(s) have declared they have no conflict of interest with regard to this content

Ethics

The author(s) declare that they have sought and gained approval from the relevant ethics committee/IRB for this research and its publication.

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