How this is formated

Eras (Period of time in Milenium's): an very simple overview of what happens, and focuses for most Cultures & Gods
Ages (Period of time in Centurium): Ages are Phases in eras that people go through to better explain main events in the time period.
Everything inbetween called events (period of time in Full dates (#/#/#/#)): The inbetween

How to certain time periods are referenced:

Ages

When referencing an age its typically referenced as one of the following
Undeveloped age - A time that and age is less than half way to completion
Developing age -A time that and age is either halfway or 65 of the way completed
Developed age - A Time that an age is half way or more to completion

Events

Refrenced by the age its in then the

Transfer periods - Eras and ages can overlap, this is called a transfer period