Is there a definitive explanation of how time works in the Never-Realm?

I remember watching Ninjago season 11 on Netflix back then, and I was completely confused about how time worked there. In a matter of days, 60 years had passed in the Never-Realm, while the Ninja's time there was a matter of many days. We saw a few days in Ninjago, and it seemed to correspond to only a few days, and the fact that Akita and Kataru hadn't aged much confused me. However, when I went to the wiki at the time, I saw that Tommy had explained that Aspheera had sent Zane through time...