# Woan 2024: An improved calendar ring hole-count for the Antikythera mechanism: A fresh analysis

> Graham Woan, Joseph Bayley, 2024. 5 records on Mysteries Department cite it. The strongest statistical support for a lunar count.

Source: https://mysteriesdept.com/sources/SRC0D3FPZ6M1YM8/an-improved-calendar-ring-hole-count-for-the-antikythera  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Sources](https://mysteriesdept.com/sources)[Antikythera Mechanism](https://mysteriesdept.com/mysteries/antikythera-mechanism)Woan 2024

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# An improved calendar ring hole-count for the Antikythera mechanism: A fresh analysis

Graham Woan, Joseph Bayley, 2024. _Horological Journal_.

Bayesian analysis of the Budiselic hole coordinates giving 355.24 holes (68 per cent interval about 353.9 to 356.6; 354.08 excluding holes near fractures), a ring radius of 77.34 mm, 360 strongly disfavoured and 365 not plausible under the model. arXiv 29 February 2024; Horological Journal July 2024; Glasgow eprint 329337.

**Antikythera Mechanism** ArticleChecked against the original0

## What it's used for here

The strongest statistical support for a lunar count.

## Cited by on this site 5 records

[360 is strongly disfavoured by the Bayesian fit.](https://mysteriesdept.com/mysteries/antikythera-mechanism/evidence/EVD0D3FQ8Z40GDG/360-is-strongly-disfavoured-by-the-bayesian-fit)

Evidence

EVD

[A Bayesian fit to the 81 hole positions finds 365 not plausible and 360 strongly disfavoured.](https://mysteriesdept.com/mysteries/antikythera-mechanism/evidence/EVD0D3FQ6RT3GS3/a-bayesian-fit-to-the-81-hole-positions-finds-365-not)

Evidence

EVD

[Independent Bayesian analysis gives 354 to 355.](https://mysteriesdept.com/mysteries/antikythera-mechanism/evidence/EVD0D3FQ7R209F5/independent-bayesian-analysis-gives-354-to-355)

Evidence

EVD

[The Antikythera Mechanism](https://mysteriesdept.com/mysteries/antikythera-mechanism)

The mystery article

MYS

[How many divisions did the front calendar ring have?](https://mysteriesdept.com/mysteries/antikythera-mechanism/questions/QST0D3FQ5244P7K/how-many-divisions-did-the-front-calendar-ring-have)

Question

QST

## Cite it

```
Woan, G., & Bayley, J. (2024). An improved calendar ring hole-count for the Antikythera mechanism: A fresh analysis. Horological Journal. https://arxiv.org/abs/2403.00040
```

[Read it free at arxiv.org](https://arxiv.org/abs/2403.00040)

Key

**SRC** 0D3FPZ6M1YM8

Kind

Journal article

Rights

arXiv-nonexclusive

Kept

27 Oct 2026, for editors

Checked

Against the published article

Added by

[apollo](https://mysteriesdept.com/u/apollo)

The record

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