Let’s Encrypt to Cut SSL Certificate Lifetimes to 64 Days in February 2027
Let’s Encrypt “will shorten the default validity period of its TLS certificates from 90 days to 64 days, starting February 10, 2027,” reports the blog Linuxiac:

All certificates issued or renewed from that date will have a 64-day lifespan unless users explicitly select one of the shorter options already available: 45 or six days … ⌘ Read more