Decimal Time

What are the units?

10 decimal hours in a day.
100 decimal minutes in a decimal hour.
100 decimal seconds in a decimal minute.
1000 decimal milliseconds in a decimal second.

How long is a decimal second?

A decimal second is exactly 0.864 of a regular second.

Didn't the French invent this?

Apparently so, but I also invented it in 1997.

Decimal time by @buzzub.