[arch-general] certbot automatic renewal: why twice a day?

Hi, Looking at timer example at [1]: "Add a timer to check for certificate renewal twice a day and include a randomized delay so that ....." Why try to renew twice a day? I understand that there is 30 days before expiration date to renew. I think weekly check should be enough for a server? Regards, Łukasz [1] https://wiki.archlinux.org/index.php/Certbot#Automatic_renewal