Transparency around update cadence of data

It would be helpful for users to know how often package data is scheduled to be updated. I see that packages' "last synced" data ranges from <1 min ago to several months ago (ex. deprecated [NPM package sntp](https://packages.ecosyste.ms/registries/npmjs.org/packages/sntp)). It is reasonable for deprecated packages to be synced less often, but I would love to have more information on:
1. what cadence packages are synced on (I am assuming regularity is based on package usage?)
2. when the next sync of a package will be

prior to taking dependencies.

Thank you!