MEASURING LONG AMOUNTS OF TIME

[Ateyo Te Syaksyuk]

I am writing a fanfiction here called Ateyo Te Syasyuk: Tsulfätu.
It takes place eight years after the RDA have been kicked off Pandora.
Now there is a NEW research team trying to learn from Pandora with the possibility of terra-forming Earth and creating a clan of Avatars to live on Pandora, with the cooperation of the Na'vi, Eywa permitting.  
Problem: How do the humans converse with the Na'vi about travel to Earth in terms of time?
Terra forming in terms of time? generations  They have a concept of their own past history
Is a Na'vi year measured the same as an Earth year?
How long is the Na'vi lifespan?  Pandorapedia suggests that it is 30% longer than human lifespan.
I don't have an Activist's Survival Guide. Has any of this been postulated?

I read the thread topic from May of 2011 and these concepts weren't mentioned.

['Oma Tirea]

This is all Cameronian territory as we know it.

[Ateyo Te Syaksyuk]

Well, I guess that leaves me to being the "Master of My Own Universe!"

[Human No More]

For lifespan, well, if we assume a typical human in the future may reach 100, then 120-130 would seem reasonable if you're going with +30% (meaning some individuals may well be older).

[Ateyo Te Syaksyuk]

SAN:   For lifespan, well, if we assume a typical human in the future may reach 100,...   :SIK

HRH   I hadn't even thought of that!  That would be most likely.
When an Avatar is decanted in six years, his TOKX has reached full maturity.
I wonder if Na'vi come to full maturty in six years or whether the rapid maturity of an Avatar is caused by the artificial in-vitro process. (They decant with well defined muscles AND a braided queue!)

This has caused a quandry for Mo'at in my story.  She will see Avatars afloat in-vitro, which is the Latin phrase for IN GLASS. VITRAL, mi Na'vi means soul.  She wonders if an Uniltìrantokx in vitro has a soul. And wonders at the audacity of aysawtute to make tokx lukevitral !!! bodies without souls

I have wandered far from topic. Forgive me !