How quickly do you renew certificates?

I have a custom domain,, in Netlify. When doing an automated certificate check (from our monitoring system) I am receiving the notification:

SSL WARNING - Certificate '*' expires in 41 day(s) (2020-07-07 12:00 +0000/UTC).

When I have a look at the SSL Certs on SSL Labs I get this:

So the certificate is due to expire on 7 July. Can you tell me typically when they are renewed (on the day, few days before, a month etc.). I ask so I can adjust the alerting on our monitoring systems.

Thanks in advance.

Hi, @pauby, we don’t have any publicly guaranteed date for the primary * wildcard certificates renewal. I’ll research this and let you know what I find out.

Hi, @pauby, it is possible that the renewal might occur a little as one week before it expires. Two to four weeks before it expires is more common but one week before is possible. Even the “one week” isn’t a guarantee.

If there are other questions about this, please let us know.