Invented Reckonings
Decimal Time
French Revolution · 10 h × 100 min × 100 s
A Revolutionary experiment in a day of 10 hours, each 100 minutes of 100 seconds. Briefly official in France from 1794, it proved too disruptive and was dropped.
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At a glance
- Type
- A clock — ten hours a day
- Origin
- Revolutionary France: decreed in 1793, suspended in 1795
- Day
- 10 hours of 100 minutes of 100 seconds
- Counts from
- Midnight, as with ordinary time
- Where it’s used
- Historical
- How it’s worked out here
- Exact: the fraction of your local day, in decimal units
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