SSL Certificate (Letsencrypt) validity duration

I did a fresh installation of Jitsi on my server and chose letsencrypt for the SSL.
I noticed the validity period is not up to 90 days (about 45 days) as specified by Letsencrypt and I’m not sure if that is somehow configured when setting up Jitsi?

Nope, this comes from let’s encrypt.

okay, thanks.
Strangely the validity period is less than specified by Letsencrypt.