The 10–10 calendars have 9 equal length divisions of the year (each divisible by 10) and one extra division with the remaining days, the last 5 (common year) or 6 (leap year) not falling on any day.

## Acceptable formatsEdit

- (when only the time is shown) 6.23.56
- (when only the time is shown) 623,56‰
- (medium length) 27 Third Tenth Year 228 at 6.23.56
- (medium length) 27 Third Tenth Year 228 at 623,56‰
- (shortest length) 228-.3-27.62356
- (short length) 228-.3-27 6.23.56
- (short length) 228-.3-27 623.56‰
- (longest length) 27 Third Tenth Year 228 at 623,56‰ +0.0

## 10–10 calendar for EarthEdit

- Epoch
- 22 September 1792 AD
- Year 0
- No
- Leap day
- Every year divisible by 4 but not 128
- Subdivisions of the year
- deciyear (40 days for the first 9 and 5 or 6 days for the last)
- decaday (10 days, none in the last deciyear)
- day
- deciday (0.1 days, 2.4 hours or 144 minutes)
- milliday (0.001 days, 1.44 minutes or 86.4 seconds)
- centi-milliday (0.00001 days, 0.864 seconds)

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