<p>Well, they know according to the Metonic Calendar created in ~430 B.C.</p>

<p>To know more about <a href="https://en.wikipedia.org/wiki/Metonic_cycle" rel="nofollow noreferrer">click here</a>.</p>

CC BY-SA 4.0
2018-05-21T14:52:04.017Z
2018-05-21T14:52:04.017Z
Max
<p>I'm reading about Antikythera machine and its functions.
So I read about solar cycle and moon cycle and how they used 19 solar years to compare with 235 lunar cycles.</p>

<p>So this is my question: They know about leap day at the time (~ 200 BC)?</p>

CC BY-SA 4.0
2018-05-21T15:34:18.963Z
I'm voting to close this question as off-topic because This might be better suited to HSM.SE  (history of science)
Carl Witthoft
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2018-05-21T16:21:45.277Z
@CarlWitthoft If a question is ontopic on multiple sites, the relevant SE ruling is that it remains where it is opened.
peterh
CC BY-SA 4.0
2018-05-21T17:50:08.483Z
This is more about ancient calendar trivia than it is about the history of astronomy.
called2voyage
<the-sun><the-moon><moon-phases>
Ancient greeks know about leap day?
Max
# Ancient greeks know about leap day?

(Asked by: username_0 on 2018-05-21)

I'm reading about Antikythera machine and its functions.
So I read about solar cycle and moon cycle and how they used 19 solar years to compare with 235 lunar cycles.

So this is my question: They know about leap day at the time (~ 200 BC)?

**Tags:** the-sun, the-moon, moon-phases

> **Comments:**
> **username_1**: I'm voting to close this question as off-topic because This might be better suited to HSM.SE  (history of science)  
> **username_2**: @CarlWitthoft If a question is ontopic on multiple sites, the relevant SE ruling is that it remains where it is opened.  
> **username_3**: This is more about ancient calendar trivia than it is about the history of astronomy.  

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## 1 answers

### Answer by username_0 on 2018-05-21. Score: 2 | Accepted answer

Well, they know according to the Metonic Calendar created in ~430 B.C.

To know more about [click here](https://en.wikipedia.org/wiki/Metonic_cycle).


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