https://www.bleepingcomputer.com/news/security/ssl-tls-certificate-lifespans-reduced-to-47-days-by-2029/

The CA/Browser Forum has voted to significantly reduce the lifespan of SSL/TLS certificates over the next 4 years, with a final lifespan of just 47 days starting in 2029.

The CA/Browser Forum is a group of certificate authorities (CAs) and software vendors, including browser developers, working together to establish and maintain security standards for digital certificates used in Internet communications.