SSL certificate for https://sdf.org/ expires in 60 days Server certificate: subject:/CN=sdf.org start date: 2026-03-05 20:29:03 GMT expire date:2026-06-03 20:29:02 GMT key size:256 issuer:/C=US/O=Let's Encrypt/CN=E8 signature algorithm: ecdsa-with-SHA384 Cipher used: TLS_AES_256_GCM_SHA384 (256 bits)