question

[Omanes Alexandrapolites]

Welcome to the .Org Mythra

I've moved your thread to the EB forums - you should get a better answer there

According to the EB FAQ, these are the requirements for the Marian Reforms:

-At least the year 172BC
-Have more than 6 Latifundia built in Italy
-Hold at least 45 settlements
-Fight more than 250 battles
-Have a character that is:
Sharp/Charismatic/Vigorous
Popularis
Consul or Ex-Consul
Has Influence > 2
Has Command > 2
OR
-Conquer 90 settlements.

Theoretically, henceforth, you should be able to get the Marian reforms from 172BC onwards. I think it was set to a fixed date in older versions (0.x series), but I'm not too sure.