# 3600/Historical Note

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## Historical Note on $3600$ (Three Thousand, Six Hundred)

There are $3600$ seconds of time in an hour.

There are $3600$ seconds of arc in an degree.

There are $3600$ minutes of arc in a $60$ degree angle.

These divisions date back to the time of the Babylonians, who used a $60$-based number system for their mathematics and astronomy.

## Also see

## Sources

- 1986: David Wells:
*Curious and Interesting Numbers*... (previous) ... (next): $3600$ - 1997: David Wells:
*Curious and Interesting Numbers*(2nd ed.) ... (previous) ... (next): $3600$