# The astronomical scheme was fixed to an epoch of 205 BC and the device was made then or soon after.

> Most likely: The astronomical scheme was fixed to an epoch of 205 BC and the device was made then or soon after.

Source: https://mysteriesdept.com/mysteries/antikythera-mechanism/answers/ANS0D3FQBN24PMC/the-astronomical-scheme-was-fixed-to-an-epoch-of-205-bc-and  
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[Questions](https://mysteriesdept.com/questions)[Antikythera Mechanism](https://mysteriesdept.com/mysteries/antikythera-mechanism)[When was the mechanism made?](https://mysteriesdept.com/mysteries/antikythera-mechanism/questions/QST0D3FQ5HR1FYH/when-was-the-mechanism-made)Answer

Answer · Antikythera Mechanism

# The astronomical scheme was fixed to an epoch of 205 BC and the device was made then or soon after.

The astronomical scheme was fixed to an epoch of 205 BC and the device was made then or soon after.

**Most likely** Answers **1** questionPublished0

## Where it stands

**Most likely** Its tests partly supported it: two pieces of evidence for, none against. It needs two reviews to be accepted.

## What it predicts

- The eclipse sequence and calendar epochs both point to 205 BC.
- Letter forms admit a late third-century date.

## What would rule it out

- The epochs are shown to be a conventional starting point unrelated to the date of manufacture.

## Evidence 2 for · none against

[Letter forms are dated to roughly the late third to mid first century BC, which admits but does not require…](https://mysteriesdept.com/mysteries/antikythera-mechanism/evidence/EVD0D3FQC4P6B1P/letter-forms-are-dated-to-roughly-the-late-third-to-mid)

Suggestive

FOR

[The Saros dial's eclipse sequence is best explained by a starting full moon in 205 BC.](https://mysteriesdept.com/mysteries/antikythera-mechanism/evidence/EVD0D3FQBWW0TF7/the-saros-dials-eclipse-sequence-is-best-explained-by-a)

Supported

FOR

## The questions it answers

[When was the mechanism made?](https://mysteriesdept.com/mysteries/antikythera-mechanism/questions/QST0D3FQ5HR1FYH/when-was-the-mechanism-made)

Most likelyThe astronomical scheme was fixed to an epoch of 205 BC and the device was made then or soon after

## Cite it

```
Mysteries Department. (2026). The astronomical scheme was fixed to an epoch of 205 BC and the device was made then or soon after. [Answer ANS0D3FQBN24PMC]. https://mysteriesdept.com/r/ANS0D3FQBN24PMC
```

Key

**ANS** 0D3FQBN24PMC

Kind

Answer · hypothesis

Origin

Published

Version

1

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