Acme - when does it renew 30 of 15 days before

When you run acme list from cli, it shows the renewal date as 30 days prior to expiry. However, the cyberpanel logs show the output from the daily ssl update as saying 15 days prior.

Can anyone explain if it is 30 or 15 days when the auto renewal takes place?

As there have not been any replies I am going to guess that it is 15 days prior to expiry. I have noticed that even when Acme shows there is less than 30 days left, it doesn’t renew the cert. But they do seem to renew in the end.

It is odd though as running cli shows some domains as being past the renew date but Acme didn’t renew them.