Microcenton = .1 second
Also known as a �flash�, a tenth of a second is an important measure of both time and distance in space. As a measure of distance, about 30,000 km.
Micron = 10 microcentons = 1 second
Macrocenton = 10 microns = 10 seconds
If we are going to use a base 10 system for clock-based measures of time, then there must be a unit that fills the gap between centon and micron. However, it might never be used (and never was in the series�I made it up).
Centon = 10 macrocentons = 100 microns = 1.6 minutes
Millicenton = 10 centons = 16.6 minutes
As �milli� means �1000�, it can be suggested that this term was coined at a point when it was more applicable to distance than to time, somehow became associated to a period equal to 10 centons, and the name stuck.
Centar = 10 millicentons = 166 minutes = 2.7 hours
Megacenton (cycle) = 10 centars = 27.7 hours
The term megacenton was used in a deleted scene in GI.
Secton = 6 megacentons = 6.94 days
Making the calendar system base 6 makes sense in light of the Germanic roots for the word �yahren�. �Six� in German is �sechs�.
Quatron = 4 sectons = 27.78 days
Okay, so right after we move to base 6 we break the model, but this just tells us that there are oddities in the time system, just as there are in some of our units of measure.
Sectar = 6 sectons = 41.67 days = 1.37 months
Yahren = 6 sectars = 250 days = .685 years
This puts the �200 yahren� lifespan at about 137 years: much more acceptable as a natural lifespan.