Yentrallan year system

The Yentrallan year system is the galactic standard definition of a year. It replaced Human Standard Years, which had been used ever since humans evolved. Everything before the yentrallan year 0 is marked as 'Before Yentral'.

The yentrallan year was defined by the orbit of Yentral around its sun.

Yentrallan years were originally used by just humans, but as humans spread across the galaxy, most other species adopted it too.